If the cells of the root in a wheat plant have $42$ chromosomes,then the number of chromosomes in the cell of a pollen grain is:

When mature anthers of $Datura$ $innoxia$ are cultured in a culture medium supplemented with phytohormones named kinetin,coconut milk,and plum juice,several embryos can be obtained floating inside the microsporangia. These embryos can develop into plants that are:

The pollen grain represents which stage?

Identify the correct statement among the following.

How many microsporangia are located at the corners of a typical bilobed anther of angiosperm?

$A$ microspore mother cell forms