How many major groups have modern researchers classified the plant kingdom into?

Provide the missing terms for the following analogy-type questions:
$(i)$ Angiosperms : Flower :: Conifers : ...
(ii) Moss : Protonema :: Fern : ...

In which of the following groups are male gametes transported through the medium of water?

Select the correct option for the following statements:
$(i)$ Like bryophytes and pteridophytes,in gymnosperms,the male and female gametophytes do/do not have an independent free-living existence.
$(ii)$ Non-motile isogamous gametes are found in Spirogyra/Volvox.

In bryophytes and pteridophytes,transport of male gametes requires

Compared with the gametophytes of the bryophytes,the gametophytes of vascular plants are: