The pollen grains represent the male gametophytes. Describe the structure of mature pollen grains at released stage in common plants.

The generative cell of a pollen grain

Diameter of the pollen grains is generally

Pollen grain is related to embryo sac as

In over 60 percent of angiosperms, pollen grains are shed at

Read the following statements carefully and select the appropriate option given below. (i) The distal end of the filament is attached to the thalamus or the petal of the flower. (ii) The pollen grains represent the male sporophyte. (iii) The microsporangia develop further and become embryo sac. (iv) In over 60 per cent of naked seeded plant, pollen grains are shed at this 2-celled stage. (v) As anthers mature and dehydrate the microspores, dissociate from each other and develop into pollen grains.

The inner wall of pollen grain is called

In the com cob the tassels which wave in the wind to trap the pollen grains represents