Question

Which of the following are incorrect about pollen grains?
(i) Pollen grains develop inside the microsporangia.
(ii) Pollen grains represent the male gametophytic generation.
(iii) The pollen grains have a two-layered wall: the outer intine and inner exine.
(iv) The intine is made up of sporopollenin and has germ pores.
(v) Pollen grains are always two-celled at the time of shedding.

• A. (ii) and (iii)
• B. (ii), (iii) and (iv)
• C. (iii), (iv) and (v)
• D. (i) and (iii)

Answer 1

Answer: (C)

The pollen grains have a two-layered wall, the outer exine and inner intine. The exine is made up of sporopollenin and has germ pores. Pollen grains can be twocelled (a vegetative cell and generative cell) or three celled (a vegetative cell and two male gametes) at the time of shedding.