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During formation of mature embryo sac fr...

During formation of mature embryo sac from megaspore, the megaspore undergoes:

A

two mitotic divisions

B

two meiotic divisions

C

three meiotic divisions

D

three mitotic division

Text Solution

Verified by Experts

The correct Answer is:
D
In Polygonum type of ovule, the functional haploid megaspore enlarges in size and by means of three successive mitotic divisions, it gives rise to an eight- nucleate embryo sac.
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ARIHANT NEET-SEXUAL REPRODUCTION IN FLOWERING PLANTS -MEDICAL ENTRANCE EXAMS
  1. Which of the following floral parts forms pericarp after fertilization

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  2. Outer wall/exine of pollen grain is formed of

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  3. During formation of mature embryo sac from megaspore, the megaspore un...

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  4. One of the most resistant known biological material is

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  5. Male gametophyte of angiosperms is reduced to

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  6. One advantange of cleistogamy is

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  7. For good growth of pollen tube, necessary element is

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  8. Stalk with which ovules remain attached to placenta is called

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  9. The fertilisation in which male gametes are carried through pollen tub...

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  10. Which one of the following statements is not true?

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  11. There are 10 flowers in one individual plant of Crotalaria. In each mi...

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  12. The fusion of male and female pronuclei of the gametes is called

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  13. Embryo developed from the somatic cells are called

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  14. Endosperm is consumed by developing embryo in the seed of

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  15. Unisexuality of flowers prevents

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  16. What does the filiform apparatus do at the entrance into or Function o...

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  17. Which one of the following is resistant action

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  18. Anthesis is a phenomenon which refers to

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  19. The plant part which consists of two generations one within the other ...

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  20. Double fertilisation occurs among

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