MCQs on Double Fertilisation

 

1. Double fertilisation is a characteristic feature of:

A. Gymnosperms
B. Bryophytes
C. Pteridophytes
D. Angiosperms

2. Double fertilisation occurs inside the:

A. Ovary
B. Embryo sac
C. Anther
D. Endosperm

3. The pollen tube usually enters the embryo sac through the:

A. Chalaza
B. Funicle
C. Micropyle
D. Hilum

4. The pollen tube releases male gametes into:

A. Egg cell
B. Central cell
C. Antipodal cells
D. Synergid

5. How many male gametes are released by the pollen tube?

A. One
B. Two
C. Three
D. Four

6. Fusion of one male gamete with the egg nucleus is called:

A. Triple fusion
B. Fertilisation
C. Syngamy
D. Pollination

7. Syngamy results in the formation of:

A. Endosperm
B. Embryo sac
C. Zygote
D. Ovule

8. The zygote formed after syngamy is:

A. Haploid
B. Diploid
C. Triploid
D. Tetraploid

9. The second male gamete fuses with:

A. Egg cell
B. Synergids
C. Antipodals
D. Two polar nuclei

10. Fusion involving one male gamete and two polar nuclei is called:

A. Syngamy
B. Pollination
C. Triple fusion
D. Germination

11. Triple fusion produces:

A. Zygote
B. Embryo
C. Primary endosperm nucleus
D. Ovule

12. The ploidy of Primary Endosperm Nucleus (PEN) is:

A. Haploid
B. Diploid
C. Triploid
D. Tetraploid

13. PEN stands for:

A. Primary Egg Nucleus
B. Primary Endosperm Nucleus
C. Polar End Nucleus
D. Primary Embryo Nucleus

14. PEC develops into:

A. Embryo
B. Ovule
C. Seed coat
D. Endosperm

15. The zygote develops into:

A. Fruit
B. Embryo
C. Endosperm
D. Ovary

16. Endosperm mainly functions in:

A. Protection
B. Pollination
C. Nourishment of embryo
D. Seed dispersal

17. Double fertilisation includes:

A. Pollination and fertilisation
B. Syngamy and triple fusion
C. Germination and fertilisation
D. Pollination and germination

18. The central cell after triple fusion becomes:

A. Zygote
B. Synergid
C. Primary Endosperm Cell
D. Antipodal cell

19. Triple fusion involves the fusion of:

A. Two haploid nuclei
B. Three haploid nuclei
C. Four haploid nuclei
D. One diploid nucleus

20. Which one of the following is unique to flowering plants?

A. Pollination
B. Seed formation
C. Double fertilisation
D. Photosynthesis

See all answers here