In Ascomycetes and Basidiomycetes,the dikaryo | vedclass

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(A) In $Ascomycetes$ and $Basidiomycetes$,a dikaryotic stage occurs where two nuclei $(n+n)$ are present in a single cell. This phase is known as the

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Haploid

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(A) In $Ascomycetes$ and $Basidiomycetes$,a dikaryotic stage occurs where two nuclei $(n+n)$ are present in a single cell. This phase is known as the dikaryophase. Since each nucleus is haploid $(n)$,the cell containing two such nuclei is considered to have a $n+n$ condition,which is functionally distinct from a true diploid $(2n)$ cell where the nuclei have fused. However,in the context of ploidy levels provided in the options,the dikaryotic cell is often associated with the $n+n$ state,which is effectively haploid in terms of genetic contribution per nucleus before karyogamy. Among the given options,the most accurate description of the dikaryotic state $(n+n)$ in these fungi is that it is not diploid $(2n)$ until karyogamy occurs. Therefore,it is considered haploid in the sense of having two separate haploid nuclei.

Column $I$	Column $II$
$(i)$ $Trichoderma$	$(a)$ $Deuteromycetes$
$(ii)$ $Yeast$	$(b)$ $Basidiomycetes$
$(iii)$ $Bread \text{ } mould$ $(Rhizopus)$	$(c)$ $Phycomycetes$
$(iv)$ $Smut$ $(Ustilago)$	$(d)$ $Ascomycetes$

In $Ascomycetes$ and $Basidiomycetes$,the dikaryotic cell is .....

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Column $I$ Column $II$

$(i)$ $Trichoderma$ $(a)$ $Deuteromycetes$

$(ii)$ $Yeast$ $(b)$ $Basidiomycetes$

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