Explanation
Algae reproduce sexually with the help of male and female gametes, male gametes are present in antheridium and female gametes are present in oogonium. Oogonium is a non-motile organ, and it gets fused by male gametes during the process of sexual reproduction.
The correct answer is B.
Cytological structure of all the above options revealed that they lack flagella.
Red alga is eukaryotic without flagella, centrioles, with phycobiliproteins and chloroplast lacking external endoplasmic reticulum and unstacked thyllakoid.
Cyanobacteria do not have organs for movement such as flagella, but some filamentous BGA exhibit gliding movement due to slime secretion along with contractile waves in the cells.
In case of higher seed plants (Spermatophyta) like gymnosperm and angiosperm, flagella are absent since, presence of pollen grain eliminated use of water for fertilization. Thus, the correct answer is option D.
Chondrus crispus is a red algae which is an Irish moss. The word Iris means "little rock", it is a species of red alga which grows abundantly along rocky parts.
Other options: True moss belongs to class Bryopsida of division Bryophyta. Lichens are symbiotic association of algae with fungi found in moist habitat. Division Bryophyte exist in moist and aquatic environment called as amphibians of plant kingdom.
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