The insect $Blastophaga$ $grossorum$ is associated with the pollination of

In which of the following plants are the pollen grains long and ribbon-like?

Identify the types of pollination $P, Q$ and $R$ in the given figure.
$\quad\quad\quad P \quad\quad Q \quad\quad R$

Anemophily type of pollination is observed in......

Assertion: $Chasmogamous$ flowers require pollinating agents.
Reason: $Cleistogamous$ flowers do not expose their sex organs.

In plant species where pollen grains are covered by a mucilaginous layer to protect them from moisture,which agent is responsible for pollination?