Advertisements
Advertisements
प्रश्न
Describe the formation of helobial endosperm
Advertisements
उत्तर
Helobial type of endosperm:
a. It is an intermediate between nuclear and cellular type of endosperm.
b. First division of primary endosperm nucleus is followed by (division of cytoplasm) wall formation.
c. The wall formation results in the central cell being divided into a large micropylar and a small chalazal chamber.
d. In both the chambers the development occurs as seen in nuclear type.
e. This type is generally seen in Helobiae series of monocots, hence the name ‘Helobial Endosperm’.
APPEARS IN
संबंधित प्रश्न
Angiosperms bearing unisexual flowers are said to be either monoecious or dioecious. Explain with the help of one example each.
Describe the development of endosperm after double fertilisation in an angiosperm.
Why does endosperm development preceeds that of zygote ?
______ is the first cell of female gametophytic generation in angiosperms.
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.
If an angiospermic male plant is diploid and female plant tetraploid, the ploidy level of endosperm will be ______.
The endosperm of gymnosperms is ______.
The cells of endosperm have 24 chromosomes. What will be the number of chromosomes in the gametes?
Coconut water contains:
