Non-motile gametes are formed in :- | vedclass

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(D) In $Nostoc$ (a cyanobacterium),reproduction occurs through non-motile spores like akinetes,hormogonia,or heterocysts,and gametes are not formed in

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$(1) \& (3)$ both

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(D) In $Nostoc$ (a cyanobacterium),reproduction occurs through non-motile spores like akinetes,hormogonia,or heterocysts,and gametes are not formed in the traditional sense as it is a prokaryote. However,in the context of algae and related organisms,$Polysiphonia$ (a red alga) is characterized by the complete absence of flagellated or motile stages in its life cycle,meaning its gametes are non-motile. $Fucus$ (a brown alga) produces motile male gametes (sperms). Therefore,both $Nostoc$ and $Polysiphonia$ represent organisms where motile gametes are absent. Thus,the correct option is $(1) \& (3)$.

Column $I$	Column $II$
$(a)$ Chlamydomonas	$(i)$ Moss
$(b)$ Cycas	$(ii)$ Pteridophyte
$(c)$ Selaginella	$(iii)$ Algae
$(d)$ Sphagnum	$(iv)$ Gymnosperm

Non-motile gametes are formed in $:-$

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Match the following (Column $I$ with Column $II$):
Column $I$ Column $II$
$(a)$ Chlamydomonas $(i)$ Moss
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