Question

Q.3.In --- , the release of pollens and the receptivity of stigma are not synchronized. For eg., in sunflower, the stigma becomes receptive long after the pollen release.

Answer 1

Answer:

Dichogamy: In this strategy, the release of pollens and the receptivity of stigma are not synchronized. For eg., in sunflower, the stigma becomes receptive long after the pollen release.

Answer 2

Explanation:

$\huge\mathtt\red{Answer}$

→It is a thin and continuous layer of pollen grain which encloses the PM of a cytoplasm.

→It is made up of cellulose and pectin.

→A newly differentiate and Pollen Grain has a central nucleus and cytoplasm.