Mycorrhizal association occurs in $Pinus$,$Ficus$ and

Given below are two statements: One labelled as Assertion $A$ and the other labelled as Reason $R$:
Assertion $A$: In gymnosperms,the pollen grains are released from the microsporangium and carried by air currents.
Reason $R$: Air currents carry the pollen grains to the mouth of the archegonia where the male gametes are discharged and pollen tube is not formed.
In the light of the above statements,choose the correct answer from the options given below:

Plants that lack flowers and fruits but produce seeds are known as . . . . . . .

The resin duct of gymnosperms is an example of .........

In the embryo of $Pinus$,rosette cells lie:

$A$ transverse section of a plant organ shows vessels but does not show companion cells. This organ may belong to: