List the changes observed in an angiosperm flower subsequent to pollination and fertilisation.
Give differences : Microsporogenesis and Megasporogenesis
Identify $A, B, C$ and $D$
Give differences : Anther and Ovary
Which one of the following statements is not true?
Differentiate between:
$(a)$ Integument and testa;
$(b)$ Perisperm and pericarp.