Question

Ubisch bodies are connected with the formation of

• A. Sporopollenin
• B. Intine and pollenkitt
• C. Exine
• D. Pollenkitt and pollinia

Answer 1

Answer: (C)

Exine

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 increases 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.

So, the correct answer is C.