Question

Which type of lifecycle occurs in MUCOR?
A. Isomorphic
B. Heteromorphic
C. Haplontic
D. Diplontic

Answer 1

Hint:- Mucor is a common filamentous fungus that is normally found in plants, dead and decaying animals, fruits, vegetables. It is also commonly used as laboratory contaminant. As it is grown on stale food, dead and decaying plants and animals they are harmful for the human, amphibians etc.

Complete step-by-step solution:-
As discussed earlier genus Mucor which comes under kingdom fungi, division Zygomycota, class mucormycetes, order Mucorales and family mucoraceae is an infectious fungus and is harmful for the humans it may cause several diseases like zygomycosis , renal failure, gastritis, pulmonary infections etc. In Mucor it has been noticed that its haploid stage is multicellular while its diploid stage is unicellular. In this the meiosis or reduction division occurs in zygote. Fungus usually reproduce by both sexual means and asexual means. Mucor reproduce through asexual means as erect sporangiophores are formed that are seen by naked eyes, its tip is swells up to form sporangium globose that has uninucleate haploid sporangiophores. Mucor spores could be branched or simple which forms apical, globular sporangia which is normally supported by the columella. Hence with this discussion we are clear that the correct option for the above mentioned question is (C) Haplontic.

Note:- Columella is a non-reproductive structure that is grown to support the sporangium in some species of fungi, it may be branched or unbranched, dome shaped structure located on the tip of sporangiophore. It functions as the exchange of nutrients developing spores inside the sporangial head and active protoplasm. For example, Rhizopus has a large sporangial head so it needs a larger columella for support.