Question

Ubisch bodies take part in development of

• A. Pollen grains
• B. Syncytium
• C. Microgametophyte
• D. Microsporangium

Answer 1

The correct option is A Pollen grains

When the anther is young, at the stage of sporogenous tissue, the cells of the Tapetum possess numerous spherical bodies called pro-Ubisch bodies or pro-orbicules. The number of pro-Ubisch bodies increase when there is meiosis in pollen mother cells. These pro-Ubisch bodies can easily cross the tapetal membrane facing the locule and during this transfer, these pro-Ubisch bodies get coated by sporopollenin and are called ubisch bodies or orbicules.

Ubisch bodies are involved in external thickening of the outer layer of pollen grain i.e. these help in exine formation.

Therefore, ubisch bodies take part in the wall formation of the developing pollen grains.

So, the correct answer is A.