What is the shape of an apical cell in the gametophytes of bryophytes and pteridophytes?

Life cycles of $Ectocarpus$ and $Fucus$ respectively are

Which of the following is known as fission algae?

Which of the following plants are referred to as cryptogams?

Consider the following four statements. Which of them are wrong?
$(a)$ The sporophyte in liverworts is more elaborate than that in mosses.
$(b)$ $Salvinia$ is heterosporous.
$(c)$ The life cycle in all seed-bearing plants is diplontic.
$(d)$ In $Pinus$,male and female cones are borne on different trees.

Primary development of male and female gametophytes takes place in the sporangia itself in