Ubisch bodies are associated with the development of:

Which of the following statements is incorrect?

Explain the role of the tapetum in the formation of the pollen grain wall.

Endothecium and tapetum in anther are derived from

Given below are two statements: One is labelled as Assertion $(A)$ and the other is labelled as Reason $(R).$
Assertion $(A) :$ Cells of the tapetum possess dense cytoplasm and generally have more than one nucleus.
Reason $(R):$ Presence of more than one nucleus in the tapetum increases the efficiency of nourishing the developing microspore mother cells.
In light of the above statements,choose the most appropriate answer from the options given below:

Isobilateral tetrads are commonly found in........