When the pollen tube enters the ovule through the micropyle,it is termed as:

If the pollen grain is compatible,the pistil accepts it and promotes which of the following events?

The compatibility and incompatibility of the pollen-pistil interaction is determined by

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

Which part functions as a landing platform for the pollen grains in flowering plants?

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.