Question

Subterranean masses of hyphae which pass the unfavorable periods in the dormant stage are known as.
A. Sclerotia
B. Mycelium
C. Rhizomorph
D. Puff balls

Answer 1

Hint:-The long tubular branching structure formed by fungi is called hyphae, They are also produced in various other organisms for example oomycetes. In fungi, hyphae are varied in structure and the functions of hyphae are different from one species to another.

Complete step-by-step solution:-
Subterranean masses of hyphae which pass the unfavorable periods in the dormant stage are known as Sclerotia. Sclerotia are morphologically varying, nutrient-rich, hundred - hyphae structures that can persist dormant then their environment is unfavorable and then, when conditions upgrade, germinate to reproduce the fungus.
The vegetative part of a fungus that is mode of a mass of branching, thread-like hyphae is called hyphae. The mass of hyphae is also called shiro, in the fairy ring fungus. Fungal colonies are made up of mycelium that is found in or on soil and other substrates.
Rhizomorphs or root-like structures are made up of parallel oriented hyphae that are present in several species of wood decay, ectomycorrhizal, and ascomycete fungi. It makes possible colonization of some dry rot fungi like Meruliporia increases and causes damage in a home by wood-decaying. This complex organ produced by fungi is composed of specialized hyphae that differ in size, function, and orientation. Fungi produce this structure to compete with the harsh condition and environment. Some of the rhizomorphs also known as another name called mycelial cord, when rhizomorphs are less complex and represent loose in a network of hyphae, and showing fan-like mat.
Puffballs are a special type of fungus, the reason behind the name of it is brown cloud dust like spore are emitted when the mature fruit body bursts or is impacted. It belongs to the Basidiomycota division. Several genera are identified like Calvatia, Calbovista, and Lycoperdon. The true puffballs do not represent a visible stalk.
As per the above discussion the correct answer of this question is option A, Sclerotia, and I hope you guys will make sure why other options are incorrect.

Note:- Few sclerotia have not germinated by the production of hyphae and rather developed into other complicated structures, like sclerotia of the ergot fungus, Claviceps purpurea, germinate in the spring to produce a very little pin-like stroma that in turn into ascospores.