Factors responsible for the rapid spread of bread mould on slices of bread are-
Factors responsible for the rapid spread of bread mould on slices of bread are-
The correct option is C (i) and (ii)
The correct option is C.
Explanation for correct option-
Statement (i) - Large number of spores
The sporangium of bread mold releases many spores in the air, which increases the chances of germination of the spores.
Statement (ii) - Availability of moisture and nutrients in bread
Bread mould is a saprophyte. The availability of moisture and nutrients in bread helps grow bread mold.
Explanation for incorrect options-
Option A
Statement (i) - Large number of spores
The sporangium of bread mould releases a large number of spores in the air, due to which germination of these spores on a suitable substratum is easy.
Statement (iii) - Presence of tubular branched hyphae
Hyphae is the primary mode of vegetative growth but is not a factor responsible for the rapid spread of bread mold.
Thus, this option would be incorrect.
Option B
Statement (ii) - Availability of moisture and nutrients in bread
Bread mould is a saprophyte and hence, the availability of moisture and nutrient from bread helps its growth.
Statement (iv) - Formation of round shaped sporangia.
Sporangia carry spores in them which help in asexual reproductions but can not be considered as a factor responsible for the rapid spread of bread mould.
Hence, this option is incorrect.
Option D
Statement (iii) - Presence of tubular branched hyphae
Hyphae is the primary mode of vegetative growth but is not a factor responsible for the rapid spread of bread.
Statement (iv) - Formation of round shaped sporangia.
Sporangia carry spores in them which help in asexual reproductions but can not be considered as a factor responsible for the rapid spread of bread mould.
Thus, this option is incorrect.
Factors responsible for the rapid spread of bread mould on slices of bread are a large number of spores and the availability of moisture and nutrients in bread.
(i) and (ii)
The correct option is C.
Explanation for correct option-
Statement (i) - Large number of spores
The sporangium of bread mold releases many spores in the air, which increases the chances of germination of the spores.
Statement (ii) - Availability of moisture and nutrients in bread
Bread mould is a saprophyte. The availability of moisture and nutrients in bread helps grow bread mold.
Explanation for incorrect options-
Option A
Statement (i) - Large number of spores
The sporangium of bread mould releases a large number of spores in the air, due to which germination of these spores on a suitable substratum is easy.
Statement (iii) - Presence of tubular branched hyphae
Hyphae is the primary mode of vegetative growth but is not a factor responsible for the rapid spread of bread mold.
Thus, this option would be incorrect.
Option B
Statement (ii) - Availability of moisture and nutrients in bread
Bread mould is a saprophyte and hence, the availability of moisture and nutrient from bread helps its growth.
Statement (iv) - Formation of round shaped sporangia.
Sporangia carry spores in them which help in asexual reproductions but can not be considered as a factor responsible for the rapid spread of bread mould.
Hence, this option is incorrect.
Option D
Statement (iii) - Presence of tubular branched hyphae
Hyphae is the primary mode of vegetative growth but is not a factor responsible for the rapid spread of bread.
Statement (iv) - Formation of round shaped sporangia.
Sporangia carry spores in them which help in asexual reproductions but can not be considered as a factor responsible for the rapid spread of bread mould.
Thus, this option is incorrect.
Factors responsible for the rapid spread of bread mould on slices of bread are a large number of spores and the availability of moisture and nutrients in bread.
