Question

The germ pores in the pollen grain are the regions ________.

• A. that can withstand high temperature and strong acids and alkalis
• B. through which sperms are released into the female gametophyte
• C. which are made up of cellulose and pectin.
• D. which lack sporopollenin

Answer 1

The correct option is D which lack sporopollenin

The outer wall of pollen grain is known as exine. It is made up of sporopollenin. It is a highly resistant substance and can withstand high temperature and strong acids and alkalis.

Germ pores are prominent apertures present on the exine. Sporopollenin is not present at the germ pores.

Sperms are released into the female gametophyte through a pollen tube.

Germ pore is not made of cellulose and pectin, it's the inner wall of pollen called intine that is made of cellulose and pectin.