After demonstration of totipotency, a botanist wishes to produce identical plants from an angiosperm by tissue culture. The parts or tissues which are likely to yield haploid embryos are

The process of formation of microspores from a pollen mother cell is called

$A$ – Only some cells of the sporogenous tissue is capable of giving rise to microspore tetrad.

$R$- The microspores are arranged in a cluster of four cells – the microscopic tetrad.

Draw the diagram of a microsporangium and label its wall layers. Write briefly about the wall layers ?

Describe internal structure of anther by mentioning about typical stamen.