Sunday, 12 April 2026

MCQs on Sexual Reproduction in Bisexual Plants

1. A bisexual flower contains:

A. Only male parts
B. Only female parts
C. Both male and female parts
D. Neither male nor female parts
Answer: C

2. The male reproductive part of a flower is:

A. Pistil
B. Ovary
C. Stamen
D. Ovule
Answer: C

3. The female reproductive part of a flower is:

A. Stamen
B. Pistil
C. Anther
D. Filament
Answer: B

4. Pollen grains are produced in:

A. Stigma
B. Style
C. Anther
D. Ovary
Answer: C

5. Ovules are present inside:

A. Stigma
B. Style
C. Ovary
D. Anther
Answer: C

6. Transfer of pollen from anther to stigma is called:

A. Fertilization
B. Germination
C. Pollination
D. Transpiration
Answer: C

7. Pollination within the same flower is:

A. Cross-pollination
B. Self-pollination
C. Double fertilization
D. Hybridization
Answer: B

8. Fusion of male and female gametes is called:

A. Pollination
B. Fertilization
C. Germination
D. Photosynthesis
Answer: B

9. Double fertilization is a feature of:

A. Gymnosperms
B. Angiosperms
C. Bryophytes
D. Algae
Answer: B

10. In double fertilization, one male gamete fuses with:

A. Polar nuclei
B. Egg cell
C. Synergids
D. Antipodals
Answer: B

11. The second male gamete fuses with:

A. Egg
B. Synergid
C. Polar nuclei
D. Ovule wall
Answer: C

12. The product of fertilization is:

A. Seed coat
B. Zygote
C. Fruit
D. Pollen
Answer: B

13. The ovule develops into:

A. Fruit
B. Seed
C. Flower
D. Root
Answer: B

14. The ovary develops into:

A. Seed
B. Fruit
C. Embryo
D. Leaf
Answer: B

15. The pollen tube grows through:

A. Stigma
B. Ovary
C. Style
D. Petal
Answer: C

16. Which is a bisexual flower?

A. Papaya
B. Maize
C.
D. Date palm
Answer: C

17. Which of the following is NOT part of the stamen?

A. Anther
B. Filament
C. Stigma
D. Connective
Answer: C

18. Endosperm is formed by:

A. Fusion of egg and sperm
B. Fusion of polar nuclei and sperm
C. Division of ovule
D. Fusion of stigma and pollen
Answer: B

19. The receptive part of the pistil is:

A. Ovary
B. Style
C. Stigma
D. Ovule
Answer: C

20. Sexual reproduction in bisexual flowers ensures:

A. Only vegetative growth
B. Genetic variation
C. No seed formation
D. No fertilization
Answer: B

Sexual Reproduction in Bisexual Plants

Sexual reproduction in bisexual plants refers to the process where a single flower contains both male and female reproductive organs and can produce offspring through fertilization.

A bisexual flower (also called a perfect flower) has:

  • Male part (Androecium) → produces pollen (male gametes)
  • Female part (Gynoecium/Pistil) → contains ovules (female gametes)

Structure of a Bisexual Flower

A bisexual flower 

Main Parts:

  1. Stamen (Male)

    • Anther → produces pollen grains
    • Filament → supports anther
  2. Pistil/Carpel (Female)

    • Stigma → receives pollen
    • Style → connects stigma to ovary
    • Ovary → contains ovules
A bisexual flower 

Process of Sexual Reproduction

1. 🌾 Pollination

Transfer of pollen from anther to stigma.

  • Self-pollination (same flower/plant)
  • Cross-pollination (different plant)

2. đŸŒŋ Fertilization


  • Pollen grain germinates on stigma
  • Forms a pollen tube through style
  • Male gametes travel to ovule
  • One gamete fuses with egg → zygote
  • Second gamete fuses with polar nuclei → endosperm
    👉 This is called double fertilization, a unique feature of flowering plants.
fertilization


Triple fusion 

3. 🌰 Seed and Fruit Formation

  • Zygote → develops into embryo
  • Ovule → becomes seed
  • Ovary → becomes fruit

Examples of Bisexual Plants

  • (China rose)
  • (Mustard)
  • (Lily)
  • (Pea)

Key Features

  • One flower contains both reproductive organs
  • Can undergo self or cross-pollination
  • Shows double fertilization
  • Leads to seed and fruit formation
  • Common in many flowering plants

Conclusion

Sexual reproduction in bisexual plants is an efficient system where a single flower can perform complete reproduction. It ensures genetic variation (especially through cross-pollination) and successful propagation of species.

What is tapetum? How it's fromed?

The tapetum is the innermost layer of the anther wall in flowering plants. It surrounds the sporogenous tissue (microspore mother cells) inside the pollen sac and plays a vital role in the nutrition and development of pollen grains.

Structure & Position

  • Located inside the anther, just outside the developing pollen grains
  • Usually single-layered, but cells are large and rich in cytoplasm
  • Can be of two main types:
    • Secretory (Glandular) tapetum
    • Amoeboid (Plasmodial) tapetum

Functions of Tapetum

  1. Nutrition Supply

    • Provides essential nutrients to developing microspores
  2. Pollen Wall Formation

    • Produces sporopollenin precursors for exine (outer wall of pollen)
  3. Secretion of Enzymes

    • Helps in dissolving callose wall around tetrads for microspore release
  4. Formation of Pollenkitt

    • Produces sticky substances that help in pollination
  5. Regulation of Pollen Development

    • Controls proper maturation of pollen grains

How Tapetum is Formed?

  • The anther develops from a group of archesporial cells.

  • These cells divide to form:

    • Primary sporogenous cells (→ microspore mother cells)
    • Primary parietal cells
  • The parietal cells further divide to form the anther wall layers:

    1. Epidermis
    2. Endothecium
    3. Middle layers
    4. Tapetum (innermost layer)

 Thus, the tapetum originates from the inner secondary parietal layer.

Labelled Diagram of Tapetum in Anther

🔍 Diagram Explanation

  • Epidermis – outermost protective layer
  • Endothecium – helps in anther dehiscence
  • Middle layers – temporary layers
  • Tapetum – innermost nutritive layer
  • Microspores/Pollen grains – located inside

The tapetum is a specialized nutritive layer of the anther that supports pollen development, wall formation, and maturation, making it essential for successful plant reproduction.

What is Microsporogenesis?

Microsporogenesis is the process by which microspores (pollen grains) are formed from microspore mother cells (MMC) inside the anther of a flower through meiotic division. It is a crucial step in the male reproductive cycle of flowering plants.

Process of Microsporogenesis (Step by Step)

Formation of pollen grain 


1. Formation of Microspore Mother Cell (MMC)

  • Inside the anther, there are pollen sacs called microsporangia.
  • Certain diploid cells differentiate into microspore mother cells (MMC).

2. Meiosis (Reduction Division)

  • Each MMC (2n) undergoes meiosis I and II.
  • This results in four haploid (n) cells.

3. Formation of Microspore Tetrad

  • The four haploid cells remain temporarily attached, forming a tetrad.
  • Types of tetrad arrangement: tetrahedral, isobilateral, linear, etc.

4. Separation of Microspores

  • The tetrad breaks apart → four individual microspores are released.
  • Each microspore develops into a pollen grain.

5. Development into Pollen Grain

  • Each microspore undergoes mitotic division to form:
    • Vegetative cell
    • Generative cell (later forms male gametes)
Diagrammatic representation of microsporogenesis

Key Points

  • Occurs in the anther (microsporangium)
  • Involves meiotic division
  • Produces haploid pollen grains
  • Essential for sexual reproduction in plants

Process of Microsporogenesis

  • MMC (2n) → undergoes meiosis
  • Forms tetrad (4 haploid cells)
  • Tetrad separates into individual microspores
  • Microspores develop into pollen grains.

Microsporogenesis is the formation of haploid microspores from diploid MMC through meiosis, leading to the development of pollen grains, which carry male gametes in plants.

What is flower?

A flower is the reproductive structure of a flowering plant (angiosperm). It is specially designed for sexual reproduction, helping in the formation of seeds and fruits. Flowers are often colorful and fragrant to attract pollinators like insects, birds, and wind.

Detailed Description of a Flower

1. General Structure

A typical flower is borne on a stalk called the pedicel and has a swollen tip known as the thalamus (receptacle). The floral organs are arranged in concentric circles called whorls.

2. Four Main Parts (Whorls)

 (a) Calyx (Sepals)

  • Outermost whorl
  • Usually green in color
  • Protects the flower in bud stage

 (b) Corolla (Petals)

  • Brightly colored
  • Attracts pollinators
  • May have scent and nectar

♂️ (c) Androecium (Male Part)

  • Composed of stamens
  • Each stamen has:
    • Anther (produces pollen grains)
    • Filament (supports anther)

♀️ (d) Gynoecium (Female Part)

  • Composed of carpels/pistil
  • Main parts:
    • Stigma (receives pollen)
    • Style (connects stigma to ovary)
    • Ovary (contains ovules → seeds after fertilization)

Types of Flowers

  • Bisexual Flower: Contains both male and female parts
    (e.g., Hibiscus, mustard)


  • Unisexual Flower: Contains either male or female part
    (e.g., papaya, maize)



Diagrammatic image of a flower 

A bisexual flower 

Explanation of Diagram

  • Sepals – outer protective layer
  • Petals – attract pollinators
  • Stamens (Androecium) – male reproductive organ
  • Pistil/Carpel (Gynoecium) – female reproductive organ
  • Ovary – contains ovules
  • Style & Stigma – pathway and landing surface for pollen

Functions of a Flower

  1. Reproduction – Produces gametes and enables fertilization
  2. Attraction – Uses color, scent, nectar to attract pollinators
  3. Seed Formation – Ovules develop into seeds
  4. Fruit Formation – Ovary develops into fruit after fertilization.


A flower is a highly specialized reproductive organ of plants, structurally organized into four whorls, and plays a vital role in plant reproduction, genetic diversity, and survival.

If you want, I can also provide a simple hand-drawn style diagram for exam writing or a labeled Assamese explanation.

Monday, 6 April 2026

Essay on Dowry in India

Introduction

Dowry is one of the most deeply rooted social evils in India. Although it has been legally prohibited for decades, it still continues in many parts of the country in both direct and indirect forms. What began historically as voluntary gifts to the bride has, in many communities, transformed into a coercive demand for cash, gold, vehicles, property, and expensive goods from the bride’s family. Dowry not only places a severe financial burden on families but also leads to harassment, domestic violence, emotional abuse, abandonment, and even death of women after marriage.

In contemporary India, dowry remains not merely a cultural practice but a major gender justice issue, linked with patriarchy, inequality, and the low social status of women. It reflects how marriage is often treated as a transaction rather than a union of equals.

Meaning of Dowry

Under the Dowry Prohibition Act, 1961, dowry means any property or valuable security given or agreed to be given directly or indirectly in connection with marriage. This may be demanded before, during, or after marriage. The Act makes both giving and taking dowry punishable by law.

However, in practice, dowry often survives under socially accepted names such as:

  • “gifts”
  • “customary offerings”
  • “help for setting up the new home”
  • “wedding expectations”

This social disguise makes dowry difficult to eliminate completely.

Dowry as a Social Problem in India

Dowry is not just an economic exchange; it is a reflection of structural discrimination against women. In many marriages, the worth of the groom is wrongly linked to:

  • his job,
  • salary,
  • education,
  • family prestige,
  • caste status, and
  • social standing.

As a result, daughters are often viewed as a financial burden, while sons are treated as economic assets. This harmful mindset contributes to:

  • delayed marriages,
  • debt in poor families,
  • domestic cruelty,
  • female foeticide,
  • and dowry deaths.

Dowry is therefore both a social evil and a crime against women.

Statistical Analysis of Dowry in India

1. National Trend

Dowry-related crimes in India are generally reflected through three important legal categories:

(a) Dowry Deaths

These are cases where a woman dies under unnatural circumstances within seven years of marriage and evidence suggests dowry harassment.

  • India recorded around 6,156 dowry deaths in 2023, according to reporting based on the latest NCRB release.

(b) Cruelty by Husband or Relatives

This includes harassment, mental cruelty, and physical abuse, often linked to dowry demands.

  • In 2023, India recorded 133,676 cases under “cruelty by husband or relatives,” making it the largest category of crimes against women.

(c) Dowry Prohibition Act Cases

These include cases directly registered under the anti-dowry law.

  • In 2022, India recorded 13,479 cases under the Dowry Prohibition Act.

These figures show that dowry is not a minor or declining issue; rather, it remains a major form of gender-based violence in India.

2. Interpretation of the Statistics

The statistics suggest several important realities:

  • Dowry violence is widespread, not limited to rural or uneducated populations.
  • Many cases are likely underreported due to family pressure, fear of stigma, or dependence on the husband’s family.
  • The number of cruelty cases is much higher than direct dowry law cases, indicating that dowry often appears in disguised forms of domestic abuse.
  • Dowry deaths represent the extreme end of a longer pattern of harassment.

Thus, dowry should be understood not only through deaths, but through the broader cycle of coercion, humiliation, and violence faced by married women.

Most Dominant State in Dowry Cases

Uttar Pradesh

Among Indian states, Uttar Pradesh is consistently reported as one of the most dominant states in dowry-related crimes, especially in terms of total number of dowry deaths and crimes against women. Recent NCRB-based reporting also notes that UP recorded the highest overall crimes against women cases in 2023.

Why Uttar Pradesh is often dominant

Several factors contribute to this:

  • large population,
  • strong patriarchal family structure,
  • early marriage in many areas,
  • persistence of caste-based marriage arrangements,
  • social pressure for “status marriages,”
  • and weak social resistance to dowry.

In many cases, marriage negotiations are openly linked with money, vehicles, gold, or household assets.

Other High-Burden States

Besides Uttar Pradesh, several states frequently appear among the highest for dowry-related deaths and harassment:

  • Bihar
  • Madhya Pradesh
  • Rajasthan
  • West Bengal
  • Odisha

Analyses of NCRB-linked data show that a few states account for a very large share of India’s dowry deaths. For example, reporting on NCRB data indicates that Uttar Pradesh, Bihar, Madhya Pradesh, and Rajasthan together account for a major proportion of dowry deaths, while another analysis noted heavy clustering of dowry-motive murders in West Bengal, Odisha, and Bihar over a multi-year period.

This suggests that dowry violence is not uniformly distributed; it is more concentrated in certain socio-cultural regions.

States with Less Dowry Cases

States and Union Territories with very low recorded dowry deaths or dowry complaints are often found in:

  • smaller northeastern states, and
  • some small Union Territories.

These may include:

  • Mizoram
  • Nagaland
  • Meghalaya
  • Sikkim
  • Arunachal Pradesh
  • Lakshadweep
  • Andaman & Nicobar Islands

Why these states often report fewer dowry cases

Possible reasons include:

  1. Different marriage customs — some communities do not traditionally practice dowry in the same way as North Indian patriarchal systems.
  2. Stronger community-based social control.
  3. Tribal and matrilineal influences in certain areas.
  4. Smaller population size, leading to fewer absolute cases.
  5. In some cases, underreporting may also play a role.

So, while low numbers are encouraging, they should be interpreted carefully. A “low-case state” may mean:

  • genuinely lower prevalence, or
  • lower reporting.

Dowry Situation in Northeast India

In Northeast India, dowry has historically been less dominant compared to many northern and central Indian states. However, this does not mean the region is completely free from the problem.

Current trend in Northeast

Dowry practices are gradually increasing in some parts of the Northeast due to:

  • urbanisation,
  • migration,
  • imitation of mainland marriage customs,
  • rising consumerism,
  • and status competition.

Assam

Among northeastern states, Assam has shown relatively more dowry-related complaints and social discussion than some tribal-majority states, partly because:

  • it has a larger population,
  • more social overlap with mainstream Indian marriage systems,
  • and increasing material expectations in marriage.

Thus, Northeast India generally records lower dowry violence than states like Uttar Pradesh or Bihar, but the issue is slowly emerging and should not be ignored.

Causes of Dowry in India

Dowry continues because it is supported by multiple social, cultural, and economic forces. The major causes are discussed below.

1. Patriarchal Social Structure

The biggest cause of dowry is patriarchy — a social system in which men hold more power and women are considered dependent. In such a structure:

  • sons are valued more than daughters,
  • women are seen as “paraya dhan” (belonging to another family),
  • and marriage becomes the point at which wealth is transferred from the bride’s family.

This unequal gender structure allows dowry to survive.

2. Marriage as a Status Transaction

In many families, marriage is treated as a social contract of prestige. Grooms with:

  • government jobs,
  • professional degrees,
  • urban employment,
  • or higher caste status

are often “priced” in the marriage market. The bride’s family is then expected to provide dowry according to the groom’s “value.”

This commercialisation of marriage is one of the strongest drivers of dowry.

3. Economic Greed

In many cases, dowry is no longer justified as “tradition” but is openly driven by greed and materialism. Demands may include:

  • cash,
  • cars,
  • furniture,
  • gold,
  • electronics,
  • land,
  • or assistance in business.

Even after marriage, repeated demands may continue, leading to harassment and abuse.

4. Social Pressure and Fear of Shame

Many parents agree to dowry because they fear:

  • social criticism,
  • cancellation of marriage,
  • insult from the groom’s family,
  • or damage to the daughter’s future.

Thus, dowry survives not only because some demand it, but because many families feel forced to comply.

5. Lack of Economic Independence of Women

When women are not economically independent, their bargaining power in marriage becomes weak. Families often believe that giving more dowry will ensure:

  • a “better” husband,
  • security for the daughter,
  • or social acceptance after marriage.

This reflects how economic inequality reinforces gender inequality.

6. Weak Enforcement of Law

India has strong legal provisions against dowry, but implementation is often weak. Problems include:

  • delayed police action,
  • social compromise outside the legal system,
  • fear of filing complaints,
  • low conviction in some cases,
  • and family pressure on victims to remain silent.

As a result, law alone has not been enough to eliminate the practice.

7. Cultural Acceptance

In many communities, dowry is still viewed as “normal.” When a social evil becomes normalized, people stop questioning it. Many families that publicly oppose dowry still privately participate in it.

This hypocrisy helps the system continue across generations.

Legal Measures Against Dowry in India

India has enacted several legal protections to curb dowry and dowry-related violence.

Important legal provisions

  • Dowry Prohibition Act, 1961 – prohibits giving, taking, or demanding dowry.
  • Section 304B IPC / corresponding new criminal law provision – deals with dowry death.
  • Section 498A IPC / Section 85 BNS – deals with cruelty by husband or relatives.
  • Evidence law presumptions also help courts in dowry death cases where death occurs within seven years of marriage.

These laws are essential, but their success depends on:

  • awareness,
  • reporting,
  • police sensitivity,
  • and speedy justice.

Suggestions to Reduce Dowry in India

Dowry cannot be ended by law alone. It requires social transformation. Some important steps are:

1. Promote women’s education and employment

An educated and economically independent woman is less vulnerable to exploitation.

2. Encourage simple marriages

Lavish weddings often create a social environment where dowry becomes expected.

3. Social boycott of dowry-seeking families

Communities must reject and publicly disapprove of such marriages.

4. Awareness campaigns

Schools, colleges, and media should actively spread anti-dowry awareness.

5. Stronger legal enforcement

Fast investigation and speedy trial are necessary to deter offenders.

6. Change family mindset

Parents must stop treating daughters as liabilities and sons as assets.

Conclusion

Dowry remains one of the most serious social evils in India because it combines economic exploitation, gender inequality, domestic violence, and cultural hypocrisy. States like Uttar Pradesh, Bihar, Madhya Pradesh, Rajasthan, and West Bengal often show a higher burden of dowry-related violence, while many northeastern and smaller states report comparatively fewer cases. Yet the problem is national in character and should not be dismissed as limited to a few regions.

The statistical evidence clearly shows that dowry is not disappearing — it is merely changing form. Harassment, cruelty, coercion, and deaths linked to dowry continue to affect thousands of women each year. Therefore, the fight against dowry must involve not only legal punishment but also social reform, gender equality, education, and moral responsibility.

A truly modern India can only be built when marriage is based on mutual respect and dignity, not on money, greed, and social status.

Sunday, 29 March 2026

List of Life Sciences Journals (widely recognized; commonly indexed in Scopus and Web of Science)

List of Life Sciences Journals (widely recognized; commonly indexed in Scopus and Web of Science)

1) General Life Sciences / Biology

These are broad journals useful for interdisciplinary life science papers.

  1. Nature
  2. Science
  3. Proceedings of the National Academy of Sciences
  4. Scientific Reports
  5. PLOS ONE
  6. Life
  7. Biology Open

Best for: broad biology, ecology, molecular biology, biodiversity, multidisciplinary life science.

2) Plant Science / Botany

These are especially relevant if your work is in floristics, taxonomy, ecology, conservation, plant diversity, ethnobotany, or plant physiology.

  1. Journal of Experimental Botany
  2. Plant Physiology
  3. Plant, Cell & Environment
  4. Plant and Soil
  5. New Phytologist
  6. Annals of Botany
  7. Botanical Journal of the Linnean Society
  8. Plant Systematics and Evolution
  9. Systematic Botany
  10. Nordic Journal of Botany
  11. Phytotaxa
  12. Kew Bulletin
  13. Rheedea
  14. Taiwania
  15. Feddes Repertorium

Best for your area: floristic diversity, taxonomy, conservation, protected areas, regional flora.

3) Ecology / Biodiversity / Conservation

Very suitable for protected area studies, species diversity, forest ecology, wetland ecology, and conservation research.

  1. Biodiversity and Conservation
  2. Biological Conservation
  3. Journal for Nature Conservation
  4. Global Ecology and Conservation
  5. Ecological Indicators
  6. Ecology and Evolution
  7. Diversity
  8. Forest Ecology and Management
  9. Journal of Tropical Ecology
  10. Tropical Ecology
  11. Wetlands Ecology and Management
  12. Aquatic Botany

Excellent for Assam / Northeast India topics: floristic diversity, conservation priority species, invasive plants, forest structure, wetland plants.

4) Microbiology / Biotechnology / Molecular Life Sciences

Good if your work touches microbes, biochemical pathways, lab biology, molecular ecology, or biotechnology.

  1. Applied Microbiology and Biotechnology
  2. Microbiological Research
  3. FEMS Microbiology Ecology
  4. Journal of Applied Microbiology
  5. BMC Microbiology
  6. BMC Biotechnology
  7. Biotechnology Letters
  8. Current Microbiology
  9. World Journal of Microbiology and Biotechnology

5) Zoology / Wildlife / Animal Biology

If you also need animal-side life science journals.

  1. Journal of Zoology
  2. Zoological Journal of the Linnean Society
  3. Animal Biodiversity and Conservation
  4. Mammalian Biology
  5. Acta Zoologica

Best journals specifically for your likely research area

Since you often work on botany / floristics / biodiversity / conservation, these are the most suitable target journals:

Very suitable shortlist

  • Biodiversity and Conservation
  • Journal for Nature Conservation
  • Global Ecology and Conservation
  • Diversity
  • Plant Systematics and Evolution
  • Botanical Journal of the Linnean Society
  • Systematic Botany
  • Phytotaxa
  • Wetlands Ecology and Management
  • Aquatic Botany

How to check whether a journal is still active in Scopus and WoS

This is very important because indexing status can change.

For Scopus

Check:

  • Journal title
  • ISSN
  • SJR quartile (Q1/Q2/Q3/Q4)
  • H-index
  • Publisher
  • Scope

Use: SCImago Journal Rankings (SJR)

For Web of Science

Check:

  • Whether journal is in SCIE, ESCI, SSCI, etc.
  • Coverage years
  • Publisher details

Use: Web of Science Master Journal List

My practical advice for you

If your paper is on:

Floristic diversity / checklist / species composition

Best targets:

  • Phytotaxa
  • Taiwania
  • Kew Bulletin
  • Plant Systematics and Evolution

Conservation / protected area / Dehing Patkai / biodiversity assessment

Best targets:

  • Biodiversity and Conservation
  • Biological Conservation
  • Journal for Nature Conservation
  • Global Ecology and Conservation

Wetlands / aquatic vegetation / ecological studies

Best targets:

  • Wetlands Ecology and Management
  • Aquatic Botany
  • Ecological Indicators


Wednesday, 18 March 2026

āĻŽেāϟ্ā§°িāĻ• āĻĒā§°ীāĻ•্āώাā§° āĻĒাāϛ⧰ āĻĻুāĻŽোāϜা

āĻ›াāϤ্ā§° āϜীā§ąāύ⧰ āĻŦāĻšু āĻĒ্ā§°āϤ্āϝাāĻļিāϤ āĻŽেāϟ্ā§°িāĻ• āĻĒā§°ীāĻ•্āώা āχāϤিāĻŽāϧ্āϝে āϏুāĻ•āϞāĻŽে āϏāĻŽ্āĻĒāύ্āύ āĻšৈ āĻ—ৈāĻ›ে । āĻĒā§°ীāĻ•্āώাā§° āĻ—ুā§°ুāϤ্āĻŦ āϝি⧟েāχ āύāĻšāĻ“āĻ• āĻāĻ—ā§°াāĻ•ী āĻ›াāϤ্ā§° āĻŦা āĻ›াāϤ্ā§°ীā§° āϜীā§ąāύāϤ āĻ—ুā§°ুāϤ্āĻŦāĻĒূā§°্āĻŖ āϏিāĻĻ্āϧাāύ্āϤ āϞোā§ąাāϤ āĻŦāĻšুāϤেāχ āĻāχ āĻĒā§°ীāĻ•্āώাā§° āĻĢāϞাāĻĢāϞāϞৈ āĻ…āĻĒেāĻ•্āώা āϕ⧰ি āĻĨাāĻ•ে । āĻŦāĻšুāϤেāχ āĻ—āĻŖিāϤ āφ⧰ু āĻŦিāϜ্āĻžাāύāϤ āĻ­াāϞ āύāĻŽ্āĻŦā§° āĻĒাāϞেāχ āĻŦিāϜ্āĻžাāύ āĻŦা āĻ…āύ্āϝ āĻŦিāώ⧟āϤ āĻ­াāϞ āύāĻŽ্āĻŦā§° āĻĒাāϞে āĻ•āϞা āĻŦা āĻŦাāĻŖিāϜ্āϝ āĻĒāĻĸ়িāĻŽ āĻŦুāϞি āϧাā§°āĻŖা āĻāϟা āϞৈ āĻĨাāĻ•ে । āϤাāϤāĻ•ৈāĻ“ āĻŦেāĻ›ি āϚিāύ্āϤা āĻšā§Ÿ āĻ…āĻ­িāĻ­াā§ąāϕ⧰ । āϞ⧰া-āĻ›োā§ąাāϞীāĻ• āĻ•ি āĻĒāĻĸ়োā§ąাāĻŦ āĻ•āϤ āĻĒāĻĸ়োā§ąাāĻŦ āφāĻĻি āύাāύা āĻ•āĻĨাā§°ে āĻāĻ•াংāĻļāϞোāĻ•āĻ• āĻ­াā§°াāĻ•্ā§°াāύ্āϤ āύāϕ⧰া āύāĻšā§Ÿ । āĻ•িāĻ›ু āĻ…āĻ­িāĻ­াā§ąāĻ•ে āĻĻূā§°-āĻĻূā§°āĻŖি āĻŦ্āϝāĻ•্āϤিāĻ—āϤ āĻ–āĻŖ্āĻĄā§° āĻŦিāĻĻ্āϝাāϞ⧟ āĻŦিāϞাāĻ•āϤ āφāĻ—āϤী⧟াāĻ•ৈ āϞাāχāύ āĻĒāϤাā§° āĻĻৃāĻļ্āϝ āĻĻেāĻ–া āĻ—ৈāĻ›ে । āύিāϜ⧰ āϞ⧰া-āĻ›োā§ąাāϞীā§° āĻāϟা āĻ­াāϞ āĻ•েā§°ি⧟াā§° āĻ—āĻĸ়িāĻŦāϞৈ āĻāϜāύ āĻĻা⧟িāϤ্āĻŦāĻļীāϞ  āĻ…āĻ­িāĻ­াā§ąāĻ• āĻšিāϚাāĻĒে āĻāχāĻ–িāύি āϕ⧰াāϟো āĻ–ুāĻŦেāχ āϏ্āĻŦাāĻ­াā§ąিāĻ• । āϏ⧰ু-āĻĄাāϙ⧰ āϚāĻšā§°ā§° āϚুāĻ•ে-āĻ•োāĻŖে āĻĄাāϙ⧰ āĻĄাāϙ⧰ āĻŦিāϜ্āĻžাāĻĒāύেā§°ে āĻāϤি⧟া āĻāύেāĻŦোā§° āĻĻৃāĻļ্āϝ āϤেāύেāχ āϏুāϞāĻ­ । ā§Ģā§Ļā§Ļ āĻ›াāϤ্ā§°-āĻ›াāϤ্ā§°ীā§° āĻ­িāϤ⧰āϤ ⧍ā§Ļ āϜāύ āĻ›াāϤ্ā§°-āĻ›াāϤ্ā§°ী⧟ে āĻŽেāĻĄিāĻ•েāϞ āĻŦা āχāĻž্āϜিāύি⧟াā§°িংāϤ āĻĒāĻĸ়িāĻŦāϞৈ āϏুāĻŦিāϧা āĻĒোā§ąা āĻĢāϟোāĻŦোā§° āĻĻেāĻ–ি āφāĻĒুāύিāĻ“ āωāϤ্āϏাāĻšিāϤ āĻšৈ āϤাāϤেāχ āĻĒāĻĸ়োā§ąাā§° āϏিāĻĻ্āϧাāύ্āϤ āϞāĻŦāϞৈ āĻŽāύ āϝাāĻŦ । āφāĻĒুāύিāĻ“ āĻŽāύāϤে āύিāϜ⧰ āϏāύ্āϤাāύāĻ• āϏেāχ ⧍ā§Ļ āϜāύ⧰ āĻ­িāϤ⧰āϤ āĻĻেāĻ–া āĻĒোā§ąাā§° āϏāĻĒোāύ āĻĻেāĻ–িāĻŦ । āĻāĻĻিāύ āĻāĻ• āĻŦৃāĻšāϤ্ āϧāύ⧰ āĻŦোāϜা āϞৈ āφāĻĒোāύাā§° āϞ⧰া āĻŦা āĻ›োā§ąাāϞীāϜāύীāĻ• āϤাāϤেāχ āϏ⧰্āĻŽāĻĒāύ āϕ⧰ি āĻĻিāĻŦ । āϝāĻĻি āφāĻĒুāύি āĻĒাā§°িāĻ›ে āĻŦা āφāĻĒোāύাā§° āϞ⧰াāχ āϏেāχ āĻŦ্āĻ¯ā§ąāϏা⧟āϜāĻĄ়িāϤ āĻ•āĻ োā§° āĻĒ্ā§°āϤিāϝোāĻ—িāϤাā§° āĻŽাāϜেā§°ে āĻ“āϞাāχ āϝোā§ąা ⧍ā§Ļ āϜāύ āĻ›াāϤ্ā§°ā§° āĻ—্ā§°ুāĻĒāϟোāϤ āφāĻĒোāύাā§° āϞ⧰া-āĻŦা āĻ›োā§ąাāϞীāϜāύীāĻ• āύিāĻŦ āĻĒাā§°িāϞে āϤেāύ্āϤে āĻ–ুāĻŦেāχ āĻ­াāϞ āĻ•āĻĨা । āĻ•িāύ্āϤু āϏেāχ āϏāĻŽā§Ÿ, āϧāύ, āĻŽাāύāϏিāĻ• āϚাāĻĒ āφ⧰ু āĻĒ্ā§°āϤিāϝোāĻ—িāϤাāϤ āύাāĻŽিāĻ“ āϏেāχ ā§Ēā§Žā§Ļ āϜāύ āĻ›াāϤ্ā§°-āĻ›াāϤ্ā§°ীā§° āĻŽাāϜāϤ āϝেāϤি⧟া āĻĨাāĻ•ি āϝাāĻŦ āϤেāύ্āϤে āϏেāχ āĻ…āϤ্āϝāύ্āϤ āĻŽাāύāϏিāĻ• āĻ•āώ্āϟ āφ⧰ু āĻĒ্ā§°āϤিāϝোāĻ—িāϤাā§° āĻĒাāĻ›āϤ āφāĻĒোāύাā§° āϞ⧰া āĻŦা āĻ›োā§ąাāϞীāϜāύীā§° āĻŽাāύāϏিāĻ• āĻ…ā§ąāϏ্āĻĨা āĻ•ি āĻšāĻŦ! āϤেāϤি⧟াāϟো āϏাāϧাā§°āĻŖāĻ­াā§ąে āϏ্āύাāϤāĻ• āĻĄিāĻ—্ā§°ী āϞৈ āĻĒāĻĸ়িāĻŦ āϞাāĻ—িāĻŦ।

āĻ—āϤিāĻ•ে āύিāϜ⧰ āϏāύ্āϤাāύ⧰ āχāϚ্āĻ›াāĻ•ো āĻĒāĻĸ়াā§° āĻ•্āώেāϤ্ā§°āϤ āĻ—ুā§°ুāϤ্āĻŦ āĻĻি⧟āĻ• । āĻ•েā§ąāϞ āĻĄāĻ•্āϟ⧰ – āχāĻž্āϜিāύি⧟াā§°েāχ āϜীā§ąিāĻ•াā§° ā§°াāϏ্āϤা āĻŦা āĻŽাāύ āϏāύ্āĻŽাāύ āĻĨāĻ•া āϏংāϏ্āĻĨাāĻĒāύ āύāĻšā§Ÿ । āĻ­াāϞ āϚ⧰িāϤ্ā§°āĻŦাāύ āĻšāϞে āφāĻĒোāύাā§° āϏāύ্āϤাāύে āφāĻĒোāύাāĻ• āϏāĻ•āϞোāĻĢাāϞ⧰ āĻĒā§°াāχ āϏুāĻ–āϤ ā§°াāĻ–িāĻŦ । āϏেāχāϟো āĻĒ্ā§°āϤিāϝোāĻ—িāϤীā§°ে āύāĻšā§Ÿ ।    

āφāĻĒোāύাā§° āĻ“āϚ⧰ে āĻĒাāϜ⧰ে āĻĨāĻ•া āϏ্āĻ•ুāϞ-āĻ•āϞেāϜāĻŦোā§° āϚাāĻ“āĻ• । āĻļিāĻ•্āώāĻ•, āĻĒāĻĸ়ি āĻĨāĻ•া āϞ⧰া-āĻ›োā§ąাāϞীā§° āϞāĻ—āϤ āĻ•āĻĨা āĻĒাāϤāĻ• āϞ⧰া-āĻ›োā§ąাāϞীāĻ• āωāϚ্āϚāϤ⧰ āĻŽাāϧ্āϝāĻŽিāĻ• āĻļাāĻ–াāϟোāϤ āύিāϜ⧰ āϞāĻ—āϤে ā§°াāĻ–ি āĻĒāĻĸ়োā§ąাā§° āĻ•āĻĨা āĻ­াā§ąāĻ• । āϝāĻĻি āϤাāϤ āĻ•্āϞাāĻ›-āĻĒাāϤি āĻ­াāϞ āύোāĻšোā§ąা āĻĻেāĻ–ে āĻļিāĻ•্āώāĻ•-āĻļিāĻ•্āώ⧟āϤ্ā§°ীāĻ• āϜāĻŦাāĻŦāĻĻিāĻšি āϕ⧰āĻ• । āϚাāĻŦ, āφāĻĒোāύাā§° āĻāχ āϏāϜাāĻ—āϤাāχ āφāĻĒোāύাā§° āϏāύ্āϤাāύ⧰ āϞāĻ—āϤে āφāĻĒোāύাā§° āĻ“āϚ⧰⧰ āĻļিāĻ•্āώাāύুāώ্āĻ াāύāĻ–āύো āϏুāύ্āĻĻā§° āĻšৈ āωāĻ াāϤ āϏāĻšা⧟āĻ• āĻšৈāĻ›ে

Saturday, 14 March 2026

Roles of Scientific nomenclature

Describing and publishing a new plant species follows the rules of the (ICN). Taxonomists must follow a formal scientific process so that the species name becomes valid and accepted worldwide. đŸŒŋ

Below are the main steps.

1. Field Collection and Discovery

First, a botanist discovers a plant that appears different from known species.

Actions:

  • Collect several specimens from the field.
  • Record location, altitude, habitat, flowering time, and ecological data.
  • Take photographs and field notes.

Example: Many new species from Northeast India are discovered in biodiversity-rich areas like , which is known for high floristic diversity.

2. Detailed Morphological Study

The collected plant is studied carefully.

Researchers examine:

  • Leaves
  • Flowers
  • Fruits
  • Seeds
  • Stem and root structures

Measurements and diagnostic characters are recorded using microscopes and herbarium comparison.

3. Comparison With Existing Species

The suspected new species must be compared with:

  • Herbarium specimens
  • Published taxonomic literature
  • Plant databases

This step ensures the plant is not already described.

Important databases used:

  • (Plants of the World Online)
  • (IPNI)

4. Selection of a Type Specimen

A type specimen (holotype) must be designated.

  • The holotype is a pressed herbarium specimen representing the species.
  • It is deposited in a recognized herbarium.

Example institutions:

  • ** herbarium collections.

5. Writing the Species Description

A formal scientific description is prepared including:

  • Diagnostic characters
  • Comparison with closely related species
  • Habitat and distribution
  • Flowering and fruiting time
  • Etymology (origin of the name)

Previously Latin diagnosis was required, but now English or Latin descriptions are accepted.

6. Naming the Species

The new species receives a binomial scientific name.

Structure: Genus + species epithet + author name

Example format:
Genus species Author

The species epithet may refer to:

  • A person
  • A location
  • A morphological character

Example: Osbeckia zubeengargiana named after .

7. Publication in a Scientific Journal

For a name to be valid, it must be published in a recognized scientific journal or book.

The publication must include:

  • Description or diagnosis
  • Type specimen designation
  • Scientific name

Common journals include:

  • Phytotaxa

8. Registration and Indexing

After publication, the new species name is indexed in global databases such as:

  • (IPNI)
  • Plants of the World Online

This makes the species officially recognized worldwide.

In simple sequence

  1. Discover plant in field
  2. Collect specimens and ecological data
  3. Compare with known species
  4. Select holotype specimen
  5. Write scientific description
  6. Give binomial name
  7. Publish in scientific journal
  8. Register in plant databases

āϜুāĻŦিāύ āĻ—াā§°্āĻ—ā§° āύাāĻŽāϤ āĻŦৈāϜ্āĻžাāύিāĻ• āύাāĻŽ

 #āϜুāĻŦিāύ āĻ—াā§°্āĻ—ā§° āύাāĻŽāϤ āĻŦৈāϜ্āĻžাāύিāĻ• āύাāĻŽঃ āωāϞ্āϞাāĻšā§° āĻ…āύ্āϤ āύাāχ

Osbeckia zubeengargiana, Barnali Das & N. Nath āωāĻĻ্āĻ­িāĻĻ āϜāĻ—āϤ⧰ āύāϤুāύ āύাāĻŽ । āϝ'āϤ āϜুāĻŦিāύ āĻ—াā§°্āĻ—ā§° āύাāĻŽ āϏংāϝুāĻ•্āϤ āĻšৈāĻ›ে । āϝেāϤি⧟া āϜুāĻŦিāύ āĻ—াā§°্āĻ—ā§° āύাāĻŽ āϏংāϝুāĻ•্āϤ āĻšā§Ÿ āϏেāχ āĻ–āĻŦā§° āϏāĻŽাāϜ⧰ āĻ•োāĻŖে āĻ•োāĻŖে āĻŦি⧟āĻĒি āĻĒā§°ে । āĻ•িāĻŽাāύ āĻļāĻ•্āϤিāĻļাāϞী āϜুāĻŦিāύ āύাāĻŽā§° āĻāχ āϏāϤ্āϤ্āĻŦা। āĻ—ুā§ąাāĻšাāϟী āĻŦিāĻļ্āĻŦāĻŦিāĻĻ্āϝাāϞ⧟⧰ āĻ—ā§ąেāώāĻ• āĻŦā§°্āĻŖাāϞী āĻĻাāϏ āφ⧰ু āĻāύ. āύাāĻĨā§° āĻ—ā§ąেāώাāĻŖāϤ āĻĒোā§ąা āύāϤুāύ āωāĻĻ্āĻ­িāĻĻ āĻĒ্ā§°āϜাāϤিā§° āύাāĻŽ āĻ…āϏāĻŽā§° āφāĻŦেāĻ—ā§° āύাāĻŽā§° āϏৈāϤে āϏংāϝুāĻ•্āϤ āĻšোā§ąাāϤ āĻŽাāύুāĻšā§° āĻŽাāϜāϤ āĻāϤি⧟া āĻ•ৌāϤুāĻš'āϞ āϜāύ্āĻŽ āĻšৈāĻ›ে । āϏেāĻ‡ā§Ÿা āϏ্āĻŦাāĻ­াā§ąিāĻ• ।

āĻ•িāĻ›ুāϞোāĻ•ে āĻ•ৈāĻ›ে āĻāχāϟোāϚোāύ āĻĢুāϟāĻ•āϞা āĻ—āĻ› । āĻĻুāĻŦāϛ⧰ āĻŽাāύ āφāĻ—āϤেāχ āϜāύোā§ąাāĻš'āϞে āĻŽāĻ‡ā§Ÿে āφ⧰ু āϤāĻĨ্āϝ āĻĻিāĻŦ āĻĒাā§°িāϞোāĻšেঁāϤেāύ, āĻāχāϟো āĻ•ি āύāϤুāύ āϏৃāώ্āϟি āχāϤ্āϝাāĻĻি āχāϤ্āϝাāĻĻি āĻ•āĻĨোāĻĒāĻ•āĻĨāύ....

āĻāϜোāĻĒা āĻ—āĻ›āĻ• āϞৈ āĻŽাāύুāĻšে āĻāχāĻ–িāύিāĻ“ āϝে āφāϞোāϚāύা āϕ⧰িāĻ›ে āϏেāĻ‡ā§Ÿাāχ āϝāĻĨেāώ্āϟ। āĻāĻ‡ā§Ÿা āĻšৈāĻ›ে āĻ•েā§ąāϞ āϜুāĻŦিāύ āĻ—াā§°্āĻ—ā§° āĻŦাāĻŦেāĻšে। āĻ•িāĻŽাāύ āĻļāĻ•্āϤিāĻļাāϞী āϜুāĻŦিāύ āĻ—াā§°্āĻ—। āĻŽাāύুāĻšāĻ• āĻŦৈāϜ্āĻžাāύিāĻ• āφāϞোāϚāύা-āϏāĻŽাāϞোāϚāύা āϕ⧰িāĻŦāϞৈāĻ“ āĻŦাāϧ্āϝ āϕ⧰া⧟।

āφāϚāϞ āĻ•āĻĨাāϟোāĻ• āϞৈ āφāĻšোঁ । āφāĻŽি āϏāϚ⧰াāϚ⧰ āĻĢুāϟāĻ•āϞা āĻŦুāϞি āĻ­ā§ąা, āĻ“ঁāĻ  āĻ•āϞাāĻĒā§°ি āϝোā§ąাāĻ•ৈ āĻ–োā§ąা āĻĢুāϟāĻ•āϞা āĻŦিāϧ āύāĻšā§Ÿ āĻāχāĻŦিāϧ । āφāĻŽি āĻĻেāĻ–া āĻŦা āĻ–োā§ąা āĻĢুāϟāĻ•āϞাāĻŦিāϧ āĻ‡ā§ŸাāϤ āĻĄাāϙ⧰ āĻšā§Ÿ āĻŦা āϤিāύি āĻŽিāϟাā§° āĻĒāϝ্āϝāύ্āϤ āĻ“āĻ– āĻšোā§ąা āĻāĻ• āĻ—ুāϞ্āĻŽāϜাāϤী⧟ āωāĻĻ্āĻ­িāĻĻ । āĻĒাāϤāĻŦোā§° āĻ‡ā§ŸাāϤāĻ•ৈ āĻĄাāϙ⧰ । āĻŽাāύুāĻš āĻāϜāύ⧰ āωāϚ্āϚāϤাāϤāĻ•ৈāĻ“ āĻ“āĻ– āĻšā§Ÿ । āĻāχāϜোāĻĒা āĻĢুāϟāĻ•āϞাā§° āĻŦৈāϜ্āĻžাāύিāĻ• āύাāĻŽ Malastoma malabathricum L. āύাāĻŽেā§°ে āĻĒā§°িāϚিāϤ । Osbeckia zubeengargiana āĻāĻ•ে āĻ—োāϤ্ā§°ā§° (Melastomataceae) āĻš'āϞেāĻ“ āĻĒ্ā§°āϜাāϤিāϟো āĻŦেāϞেāĻ— āĻšā§Ÿ।

āĻ—ৌā§°ā§ąā§° āĻ•āĻĨাāϟো āĻšৈ āĻāχ āĻŦাāϤ⧰ি āĻŦā§°্āϤāĻŽাāύ āϏাāĻŽাāϜিāĻ• āĻŽাāϧ্āϝāĻŽāϤ āĻŦি⧟āĻĒি āĻĒā§°িāĻ›ে । āĻŦিāĻ­িāύ্āύ āϞোāĻ•ে, āφāύāĻ•ি āϏংāĻŦাāĻĻ āĻŦা āĻĻূā§°āĻĻā§°্āĻļāύ⧰ āĻĢেāϚāĻŦুāĻ• āĻĒেāχāϜ⧰ āĻĒā§°াāĻ“ āĻĒ্ā§°āĻ•াāĻļ āĻĒাāχ āĻĨāĻ•া āĻĻেāĻ–া āĻĒাāχāĻ›ো । āĻ­াāϞ āϞাāĻ—িāĻ›ে ।

āĻ•িāύ্āϤু āĻ…āϞāĻĒ āϏāϚেāϤāύāϤা āĻš'āϞে āĻāχ āĻ†ā§ąিāϏ্āĻ•াā§°āĻ• āϏāύ্āĻŽাāύ āϜāύোā§ąা āĻš'āĻŦ। āĻ•āĻĨাāϟো āĻšāϞ Osbeckia zubeengargiana Barnali Das & N. Nath āĻāϟা āϏ⧰্āĻŽ্āĻĒূāĻŖ āĻŦৈāϜ্āĻžাāύিāĻ• āύাāĻŽ। āĻāχ āĻŦৈāϜ্āĻžাāύিāĻ• āύাāĻŽāϤ āĻĻুāϟা āĻ…ংāĻļ āĻĨাāĻ•ে । āĻĒ্ā§°āĻĨāĻŽāϟো āĻ—āĻŖ (Genus) āφ⧰ু āĻĒাāϛ⧰ āĻ…ংāĻļāϟো āĻĒ্ā§°āϜাāϤি (species) । āϝেāϤি⧟া āĻŦৈāϜ্āĻžাāύিāĻ• āύাāĻŽāϟো āϞিāĻ–া āĻšā§Ÿ āĻ—āĻŖā§° āĻļāĻŦ্āĻĻāϟো āĻŦā§°āĻĢāϞা (Capital letter) āφ⧰ু āϤাā§° āĻĒাāϛ⧰ āϏāĻ•āϞো āφāĻ–ā§° āϏ⧰ুāĻĢāϞা (small letter) āĻš'āĻŦ āϞাāĻ—ে । āĻ•াāϞিā§° āĻĒā§°া āϝিāĻŽাāύāĻŦোā§° āĻāχ āωāĻĻ্āĻ­িāĻĻāϜোāĻĒাā§° āύাāĻŽ āĻĻেāĻ–া āĻĒাāχ āφāĻ›ো āϤাāϤ āĻ­ুāϞāĻ­াā§ąে āϞিāĻ–া āĻšৈāĻ›ে । āĻĒ্ā§°āĻ•ৃāϤ āĻļুāĻĻ্āϧ ā§°ূāĻĒāϟো āĻšৈāĻ›ে Osbeckia zubeengargiana Barnali Das & N. Nath āĻšে Osbeckia Zubeengargiana āύāĻšā§Ÿ। āύাāĻŽā§° āĻĒাāĻ›āϤ Barnali Das & N. Nath āύাāĻŽ āϞিāĻ–া āĻšā§Ÿ āĻ•াā§°āĻŖ āĻāχ āĻĒ্ā§°āϜাāϤিāϟো Barnali Das & N. Nath ⧟ে āĻ†ā§ąিāϏ্āĻ•াā§° āϕ⧰িāĻ›ে । āϟাāχāĻĒ āϕ⧰িāϞে āχāϟাāϞিāĻ• āφ⧰ু āĻšাāϤেā§°ে āϞিāĻ–িāϞে āϤāϞāϤ āĻĒৃāĻĨāĻ• āĻĒৃāĻĨāĻ•āĻ•ৈ āφāϚ āϟাāϞিāĻŦ āϞাāĻ—ে ।

āĻ•িāĻ›ুāϞোāĻ•ে āĻ•ৈāĻ›ে - āĻāĻ‡ā§Ÿাāύো āĻ•ি āĻ†ā§ąিāϏ্āĻ•াā§°! āϤেāĻ“ঁāϞোāĻ•ে āĻāχāĻĻā§°ে āĻ­ā§ąাā§° āĻ•āĻĨাāϟোāĻ“ āϏ্āĻŦাāĻ­াā§ąিāĻ• । āĻŦেāĻ›িāĻ­াāĻ— āĻŽাāύুāĻšেāχ āϤেāύেāĻ•ৈ āĻ­াā§ąে । āĻ•িāύ্āϤু āϝিāϏāĻ•āϞে āĻ…āϞāĻĒ āĻŦেāϞেāĻ—āĻ•ৈ āĻ­াā§ąে āϤেāĻ–েāϤāϞোāĻ•েāĻšে āϏৃāώ্āϟি āϕ⧰িāĻŦ āĻĒাā§°ে । āĻ—āϛ⧰ āĻĒā§°া āĻŦা āĻ“āĻĒā§°ā§° āĻĒā§°া āĻ•িāĻŦা āĻŦāϏ্āϤু āĻŽাāϟিāϤ āϝুāĻ— āϝুāĻ— āϧ⧰ি āĻĒā§°ি āφāĻšিāĻ›ে āφ⧰ু āĻĒā§°ি āĻĨাāĻ•িāĻŦ । āĻ•িāύ্āϤু āύিāωāϟāύ āύাāĻŽā§° āĻŽাāύুāĻšāϜāύ⧰ āĻŽূā§°āϤেāχ āĻ•ি⧟ āĻ–েāϞাāϞে āϝে āφāĻĒেāϞāϟো āĻ•ি⧟ āĻŽাāϟিāϤ āĻĒā§°িāϞ। āϤাā§° āĻĒাāĻ›āϤ āϏেāχ āĻŽাāύুāĻšāϜāύ āĻĒৃāĻĨিā§ąীā§° āĻŦিāĻ–্āϝাāϤ āĻŦিāϜ্āĻžাāύী āĻšāϞ।
āϏাāĻ—ā§°ā§° āĻ“āĻĒā§°েāĻĻি āĻ…āϏংāĻ–্āϝ āĻŽাāύুāĻšে āĻ…āĻšা-āϝোā§ąা āϕ⧰ে । āϏাāĻ—ā§° āĻĒাāύী āύীāϞা āĻĻেāĻ–ে । āĻ•িāύ্āϤু āĻ•ি⧟ āϚি.āĻ­ি. ā§°āĻŽāύ āĻ›াā§°ে āϏেāχ āύীāϞা ā§°āϙ⧰ āĻŽাāϜāϤ āĻŦেāϞেāĻ— ā§°āĻšāϏ্āϝ⧰ āωāĻŽাāύ āĻĒাāϞে । āϝাā§° āĻŦাāĻŦে āφāϜি āϏāĻŽাāϜāϤ āĻŦিāĻ­িāύ্āύ āĻ•্āώেāϤ্ā§°āϤ āϏāĻšা⧟āĻ• āĻšৈāĻ›ে ।

āĻ—ুā§ąাāĻšাāϟী āĻŦিāĻļ্āĻŦāĻŦিāĻĻ্āϝাāϞ⧟⧰ āĻ—ā§ąেāώāĻ•āĻĻ্āĻŦ⧟āĻ• āĻ…āĻ­িāύāύ্āĻĻāύ āϜāύাāχāĻ›ো । āϞāĻ—āϤে āĻ…āϏāĻŽā§° āφāĻŦেāĻ— āĻšাā§°্āϟāĻĨ্ā§°āĻŦ āϜুāĻŦিāύ āĻ—াā§°্āĻ—āĻ• āĻĒৃāĻĨিā§ąী āĻĨāĻ•াāϞৈāĻ•ে āϏ্āĻŽā§°āĻŖ āϕ⧰িāĻŦ āĻĒā§°াāĻ•ৈ āϤেāĻ–েāϤ⧰ āύাāĻŽেā§°ে āωāĻĻ্āĻ­িāĻĻāϜোāĻĒাā§° āĻŦৈāϜ্āĻžাāύিāĻ• āύাāĻŽাāϕ⧰āĻŖ āϕ⧰া āĻŦাāĻŦে āϧāύ্āϝāĻŦাāĻĻ āϜ্āĻžাāĻĒāύ āϕ⧰িāĻ›ো।

MCQs on Sexual Reproduction in Bisexual Plants

1. A bisexual flower contains: A. Only male parts B. Only female parts C. Both male and female parts D. Neither male nor female parts ✅...