Mesogamy is the process in which:

What acts as a mediator in the pollen-pistil interaction?

Transmitting tissue is found in:

Where does the pollen tube develop?

Identify the correct sequence of events of pollen-pistil interaction given below.
$(a)$ Pollen tube grows through the stigma,style and reaches the ovule.
$(b)$ Pollen grain lands on the stigma.
$(c)$ Pollen germinates to form pollen tube.
$(d)$ Pollen tube carrying $2$ male gametes enters the ovule.
Choose the correct option.

The micropyle is helpful in $......$.