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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The endosperm in angiosperms is formed
The endosperm in angiosperms is formed
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]
In an angiospermic plant, endosperm is formed due to fertilization of secondary nucleus but it is absent in some of the seeds viz. pea, bean, phaseolus (moong) etc. It is due to lack of
In an angiospermic plant, endosperm is formed due to fertilization of secondary nucleus but it is absent in some of the seeds viz. pea, bean, phaseolus (moong) etc. It is due to lack of