Which method of sexual reproduction is observed in the alga shown in the given figure?

Match Column $I$ with Column $II$ and choose the correct option:

Column $I$	Column $II$
$a.$ Shallowest depth	$(i)$ Green algae
$b.$ Intermediate depth	$(ii)$ Brown algae
$c.$ Greatest depth	$(iii)$ Red algae

Select the correct option from the given list regarding algal classes and their stored food materials:
$(1)$ Rhodophyceae - Pyrenoids
$(2)$ Phaeophyceae - Laminarin
$(3)$ Bryophytes - Mannitol
$(4)$ Chlorophyceae - Floridean starch

Which one of the following shows similarity with blue-green algae on the basis of photosynthetic pigments?

Which plant group is considered 'thalloid' (lacking true roots, stems, and leaves)?

How does asexual reproduction occur in algae?