Advertisements
Advertisements
प्रश्न
Describe the development of endosperm after double fertilisation in an angiosperm.
Advertisements
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).
APPEARS IN
संबंधित प्रश्न
Some organisms suspend their metabolic activities to survive in unfavourable conditions. Explain with the help of any four examples.
Draw a labelled mature stage of a dicotyledonous embryo.
Why does endosperm development precede embryo development in angiosperm seeds?
Identify the ploidy of embryo and endosperm respectively formed after following cross.
An angiospermic male plant with 24 chromosomes in its pollen mother cells is crossed with female plant bearing 24 chromosomes in its root cells.
Identify the characteristic feature/s of helobial endosperm.
Which of the following triggers an acrosomal reaction of the sperm?
Coconut water contains:
Why does the zygote begin to divide only after the division of Primary endosperm cell (PEC)?
The type of evolution where the central part is occupied by free nuclear and the peripheral part by cells is observed in ______.
The number of chromosomes in the leaf cells of a male plant is 40 and in the stem cells of a female plant is 60. If they are artificially hybridised, what will be the number of chromosomes in the endosperm?
