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Which one of the following is not a criterion for classification of fungi?
ALL fungi are heterotrophic (saprophytes, parasites, or symbionts). Mode of nutrition is uniform across the kingdom and CANNOT be used to divide fungi into classes!
Kingdom Fungi is divided into various classes: Phycomycetes, Ascomycetes, Basidiomycetes, and Deuteromycetes.
NCERT explicitly states: "The morphology of the mycelium, mode of spore formation and fruiting bodies form the basis for the division of the kingdom into various classes."
Fungi are uniformly heterotrophic absorptive organisms (either saprophytes, parasites, or symbionts). Hence, mode of nutrition does not serve as a criterion for class-level fungal taxonomy.
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Mycelial morphology (aseptate/coenocytic vs septate/branched) is a primary criterion dividing Phycomycetes from higher fungi.
Spore formation (endogenous vs exogenous spores) is an essential taxonomic criterion.
Types of fruiting bodies (ascocarps, basidiocarps) define the classes Ascomycetes and Basidiomycetes.
Mode of nutrition is heterotrophic across all fungi and is NOT a criterion for class-level division.
Thinking fungi have different nutritional modes that define classes.
"The morphology of the mycelium, mode of spore formation and fruiting bodies form the basis for the division of the kingdom into various classes."
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