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Question

Which one of the following shows heterothallism?

A
Rhizopus
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B
Bacterium
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C
Cycas
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D
Ricinus
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Solution

The correct option is A Rhizopus
Rhizopus stolonifer is also known as black bread mold. It is a widely distributed thread-like mucoralean mold. It is a heterothallic species, in that sexual reproduction happens only when opposite mating types come in contact. Successful mating results in the formation of durable zygospores at the point of contact. So, the correct answer is option A.

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