Q. 5- Name the chemical substance present in exine and intine of
pollen grain- Draw a diagram of pollen grain and label
following parts.
¼i½ Exine ¼ii½ intine
¼iii½ Vegetative cell
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Q. 5- Name the chemical substance present in exine and intine of
answer. layers, the intine and the exine. The intine, or inner layer, consists primarily of cellulose and pectins. The exine, or outer layer, is composed of a highly decay-resistant chemical called sporopollenin.
pollen grain- Draw a diagram of pollen grain and label
answer
Structure of mature pollen grains in angiosperms.
Functions of the parts of pollen grain: A mature pollen grain has a two-layered wall—the outer exine and inner intine. The wall encloses a large vegetative cell containing vegetative nucleus and a lenticular generative cell.
see diagram in above pic ok
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