Exine of pollen grain is formed of

Exine of pollen grain is composed of

Which one of the following statements is not true? (a) Stored pollen in liquid nitrogen can be used in the crop breeding programme (b) Tapetum helps in dehiscence of anthers (c) Exine of pollen grains is made of sporopollenin (d) Pollen grains of many species cause severe allergies

Exine of pollen grains is composed of

Exine of pollen grain is made up of

Exine of pollen grain in made up of

Exine of pollen grains is made up of

The exine of pollen grain is made up of a complex substance called__________ .

The exine of pollen grain is made up of .........and has germ pores :-

The exine of pollen grain is made up of .........and has germ pores :-