NEET BIOLOGY

REPRODUCTION

REPRODUCTION IN ORGANISMS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The rapid spreading of bread mould on slices of bread is due to: (i) Presence of large number of spores in air. (ii) Presence of large number of thread-like branched hyphae. (iii) Presence of moisture and nutrients. (iv) Formation of round shaped sporangia.
A
(i) and (iii)
B
(ii) and (iv)
C
(i) and (ii)
D
(iii) and (iv)
Explanation: 

Detailed explanation-1: -The factors responsible for the rapid spreading of bread mould on slices of bread are the presence of a large number of spores in the air and the presence of moisture and nutrients in bread that act as food for the fungi.

Detailed explanation-2: -Bread mold grows profusely on a moist slice of bread rather than on a dry slice of bread because microorganisms need optimum temperature and moisture to grow and if there is no moisture they will not grow profusely.

Detailed explanation-3: -Rhizopus stolonifer is commonly known as white bread mold. It is a member of Zygomycota and considered the most important species in the genus Rhizopus. It is one of the most common fungi in the world and has a global distribution although it is most commonly found in tropical and subtropical regions.

Detailed explanation-4: -The genus Rhizopus has the same common name, bread mold, as the entire phylum, Zygomycota, in which it is found. The Zygomycota are in the Kingdom Fungi, a group unified by two structural features, a filamentous structure and the presence of cell walls formed of the polysaccharide chitin.

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