In bryophytes and pteridophytes,$.......$ is required for the transport of male gametes.

Identify the following figures and choose the correct option $:-$

$A$ well-developed archegonium with $4-6$ rows of neck canal cells in the neck region is a characteristic feature of:

When the sperms of $Funaria$ and $Pteris$ are put together near the archegonia of $Pteris$,only the sperms of $Pteris$ readily enter the archegonia and reach the egg. The reason being that

Into which groups are seed-bearing plants (Spermatophytes) classified?

What is common in all the three,$Funaria$,$Dryopteris$,and $Ginkgo$?