Home
Class 12
BIOLOGY
Why does the zygote begin to divide only...

Why does the zygote begin to divide only after the division of primary Endosperm cell (PEC)?

Text Solution

Verified by Experts

The primary endosperm cell divides repeatedly and forms a triploid endosperm tissue. The cells of this tessue are filled with resserve food materials and are used for nutrition of the developing embryo.
Embryo develops at the micropylar and of the embryo sac where zygote is situated . Most zygotes divide only after certain amount of endosperm is formed . This is an adaptation to provide assured nutrition to the developing embroyo.
Promotional Banner

Topper's Solved these Questions

  • SEXUAL REPRODUCTION IN FIOWERING PIANTS

    NCERT EXEMPLAR ENGLISH|Exercise Long Answer Type Questions|5 Videos

  • SEXUAL REPRODUCTION IN FIOWERING PIANTS

    NCERT EXEMPLAR ENGLISH|Exercise Very Short Answer Type Questions|18 Videos

  • REPRODUCTIVE HEALTH

    NCERT EXEMPLAR ENGLISH|Exercise LONG ANSWER TYPE QUESTIONS|5 Videos

  • STRATEGIES FOR ENHANCMENT IN FOOD PRODUCTION

    NCERT EXEMPLAR ENGLISH|Exercise Long Answer type Questions|8 Videos

Similar Questions

Explore conceptually related problems

N/C ratio after cell division

Give reasons why : (i) most zygotes in angiosperms divide only after certain amount of endosperm is formed. (ii) ground nut seeds are exalbuminous and castor seeds are albuminous. (iii) Micropyle remains as a small pore in the seed coat of a seed. (iv) integuments of an ovule harden and the water content is highly reduced,as. the seed matures. apple and cashew are not called true fruits.

Which cells do not divide after birth ?

Why is cell division necessary ?

After double fertilization, most zygotes divide only after certain amount of endosperm is formed. One of the importance of this adaptation is

In double fertilisation, one male gamete fuses with the (i) to form zygote and the other male gamete fuses with (ii) to form primary endosperm nucleus.

Give scientific terms for the following: A food-laden tissue differentiated inside the embryo sac after double fertilisation from the primary endosperm nucleus.

Why does leather get hardened after tanning?