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प्रश्न
Describe the development of endosperm after double fertilisation in an angiosperm.
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उत्तर
Development of Endosperm
- The primary endosperm nucleus repeatedly divides to give rise to free nuclei. This stage of development is called free nuclear endosperm.
- Cell wall formation occurs next, resulting in a cellular endosperm.
- The endosperm may either be fully consumed by the growing embryo (as in pea and beans) or retained in the mature seed (as in coconut and castor).
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संबंधित प्रश्न
Draw a labelled mature stage of a dicotyledonous embryo.
Describe the development of an endosperm in a viable seed. Why does endosperm development precedes embryo development?
Why does endosperm development precede embryo development in angiosperm seeds?
Identify the characteristic feature/s of helobial endosperm.
Identify the CORRECT statement/s from the following.
i. In post-fertilization changes within the ovule, the development of embryo is followed by the development of endosperm.
ii. Helobial endosperm is intermediate between cellular and nuclear type endosperm.
iii. Helobial endosperm is mostly observed in 72 families of dicots.
In dicots, the pollen grains are usually ______
Double fertilization leading to initiation of endosperm in angiosperms require ______.
If the endosperm cell of an angiosperm contains 24 chromosomes, the number of chromosomes in the root tip cells will be ______.
The coconut water from tender coconut is ______
Why does the zygote begin to divide only after the division of Primary endosperm cell (PEC)?
