Mesogamy is the process in which:

What is the function of the filiform apparatus during the entry of the pollen tube into the ovule?

What is the function of filiform apparatus?

In the diagram given below,show the path of a pollen tube from the pollen on the stigma into the embryo sac. Name the components of the egg apparatus.

Which structure guides the entry of the pollen tube into the synergids?

Identify the correct order of events in pollen-pistil interaction from the options given below.
$I.$ Release of male gametes into the embryo sac
$II.$ Deposition of pollen grains on stigma
$III.$ Entry of pollen tube into embryo sac
$IV.$ Development of pollen tube
$V.$ Entry of pollen tube into the ovule