Name: The Kingdom Plantae
Uploaded: 2019-07-19
Duration: 14 min 14 s
Description: There are over 300,000 species of plants. Yet, how are they so easily classified in today's world? There are various criteria for classification. Watch this...

Question

Give the salient features and comparative account of different classes of Fungi studied by you.

Accepted Answer

Salient features of Fungi:

Fungi have a heterotrophic mode of nutrition. They feed on mostly dead organic matter and are saprophytic. Some fungi like Mucor are parasites.

Mostly the body of fungi consists of a long, slender, thread-like structure called hyphae. The network of hyphae is known as mycelium.

Reproduction in fungi takes place by Vegetative reproduction that includes fragmentation, fission, budding. Asexual reproduction by the formation of Conidium, Zoospores, etc. Sexual reproduction includes plasmogamy, karyogamy, etc.

A comparative account of different classes of fungi are:

Basis of study Phycomycetes Ascomycetes Basidiomycetes Deuteromycetes

Mode of Nutrition
Saprophytic or parasitic nutrition. Saprophytic, coprophilous, decomposers or parasitic nutrition. Parasitic nutrition. Saprophytic, decomposers and parasitic nutrition.

Basis of study Phycomycetes Ascomycetes Basidiomycetes Deuteromycetes

Mode of reproduction Asexual reproduction through zoospores (motile) or aplanospores (non-motile) which are produced by sporangium. The fusion of two gametes lead to formation of zygospore. Asexual spores called conidia are produced inside conidiophores. Mycelium is formed by germination of conidia. Ascospores (sexual spores) are produced in asci and are arranged in ascocarps. Spores are generally absent. Vegetative reproduction occurs by fragmentation and fusion of two vegetative or somatic cells of two different strains is brought about by plasmogamy. The basidiospores are produced on a basidium and are arranged on basidiocarps. Reproduction takes place by asexual spores called conidia.

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