A) every nuclear division followed by wall formation
B) initially free-nuclear divisions followed by wall formation
C) first division followed by wall formation and other free nuclear
D) none of the above
Correct Answer: B
Solution :
During the development of nuclear endosperm, the primary endosperm nucleus divides repeatedly without wall formation i.e., produce large number of free nuclei. The multinucleate cytoplasm undergoes cleavage and gives rise to multicellular tissue, e.g., Maize, wheat, rice, sunflower etc. During the development of cellular endosperm, the primary endosperm nucleus divides followed by wall formation. Therefore, endosperm become cellular from beginning. e.g. Balsam, Datura, Petunia etc. During the development of helobial endosperm, the first division of primary endosperm nucleus is followed by transverse wall formation and micropylar and chalazal cell are formed. These two cells now develop like the nuclear endosperm development.
You need to login to perform this action.
You will be redirected in
3 sec
