Question

the exine possesses one or more thin places known as

Answer 1

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. The exine usually has one or more thin areas, or pores, through which the pollen tubes germinate, and the…

Answer 2

The exine possesses one or more thin places known as Germ pores.

• Two layers are present in the walls of pollen grains- exine and intine. Exine is the outer layer while intine is the inner layer of pollen grain.
• Exine contains sporopollenin which make it hard and thick. At some places, it has thin places called germ pores from where pollen tube grows. During fertilization, this pollen tube helps in the transfer of male gamete to the female gamete of a flower.
• Sporopollenin is absent in germ pores.