After karyogamy followed by meiosis, spores are produced exogenously in

After karyogamy followed by meiosis, spores are produced exogenously in
A $Agaricus$
B $Alternaria$
C $Neurospora$
D $Saccharomyces$

Explanation

Basidiospores are borne exogenously on the basidium.

Detailed Solution

In $Agaricus$ (a genus of basidiomycetes), basidiospores (meiospores) are produced exogenously. $Neurospora$ (a genus of ascomycetes) produces ascospores as meiospores, but endogenously inside the ascus. $Alternaria$ (a genus of deuteromycetes) does not produce sexual spores. $Saccharomyces$ (unicellular ascomycete) produces ascospores endogenously.

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