Why does the zygote begin to divide only after the division of Primary Endosperm Cell $(PEC)$ ?
Why does the zygote begin to divide only after the division of Primary Endosperm Cell $(PEC)$ ?
Primary endosperm centre constantly divides and triploid endosperm tissue is produced. The cells of this tissue possess mass of stored food and it is used for nutrition of developing embryo. Embryo develops at the end of micropyle where zygote is located. Many zygotes develops after becoming some amount of endosperm.
This is a type of adaptation where developing embryo gets nutrition in definite way.
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- [NEET 2013]
Assertion : Endosperm is a nutritive tissue and it is triploid.
Reason: Endosperm is formed by fusion of secondary nucleus to second male gamete. It is used by developing embryo
Assertion : Endosperm is a nutritive tissue and it is triploid.
Reason: Endosperm is formed by fusion of secondary nucleus to second male gamete. It is used by developing embryo
- [AIIMS 1998]
Enlist the steps of controlled cross pollination. Would emasculation be needed in a cucurbit plant ? Give reasons for your answer.
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