Answer:
The correct answer is option A (Zygospores).
Step-by-step explanation:
Black bread mold is the common name of a species of fungus Rhizopus stolonifer belonging to the division zygomycota and order mucorales. Fungus attacks a variety of substrates other than bread such as cheese, fruits and vegetables.
In fungus, during unfavorable conditions sexual reproduction takes place by a process known as gametangial copulation in which mycelium of opposite strains (+) and (-) come close to each other and form a swelled structure gametangia at the apical region. Then, gametangial protoplasm fuses to from zygospore s which germinates during favorable conditions and form a new fungus.
Thus, option A- zygospores is the correct answer.