Ubisch bodies are present in

Select the incorrect option regarding the vegetative cell of a pollen grain.

Complete the following flow chart:
Pollen Mother cell $\to$ Pollen tetrad $\to$ Pollen grain $\to$ Vegetative cell
Pollen Mother cell $\to$ Pollen tetrad $\to$ Pollen grain $\to$ ..........

Identify $A$ and $B$ in the diagram given below:

$A$ - Only some cells of the sporogenous tissue are capable of giving rise to microspore tetrad.
$R$ - The microspores are arranged in a cluster of four cells - the microspore tetrad.

Select the incorrect statement regarding microsporogenesis in an anther.