Give the differences between Microsporangium and Megasporangium.

All of the following are features of angiosperms except $-$

In the figure given below,the plant bears two different types of flowers marked '$A$' and '$B$'. Identify the types of flowers and state the type of pollination that will occur in them.

Find out the odd one.

How many meiotic divisions are required to produce $200$ pollen grains?

How many of the following statements are true about angiosperms?
$A$. The generative cell floats in the cytoplasm of the vegetative cell.
$B$. The stalk of the ovule is called the funiculus.
$C$. Pollen grains are shed at the two-celled stage.
$D$. The embryo sac is diploid.
$E$. The megaspore mother cell towards the chalazal end becomes functional.