Rhizopus is a genus of fungi, commonly known as bread mold. It reproduces via sporangia, often causing food spoilage. Some species can be pathogenic, posing health risks to humans.
Name the reproductive and non-productive parts of Rhizopus. How are the spores protected till they begin to grow?
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(i) In Rhizopus, which is a common bread mold, the reproductive and non-reproductive parts are as follows:
• Reproductive parts: The reproductive structures of Rhizopus include sporangia and sporangiophores. Sporangia are specialized structures that produce asexual spores called sporangiospores. Sporangiophores are the hyphal structures that support and hold the sporangia.
• Non-reproductive parts: The non-reproductive parts of Rhizopus include the mycelium, which is a network of hyphae that functions in nutrient absorption and vegetative growth. The mycelium is the vegetative, non-reproductive body of the fungus.
(ii) The spores of Rhizopus are protected by the sporangium until they are ready to germinate and grow. The sporangium is a specialized structure that encloses and protects the spores. When conditions are favorable, the sporangium bursts open, releasing the spores into the environment. This ensures that the spores are dispersed, and when they encounter suitable conditions, they can germinate and give rise to new fungal growth. The protection of spores within the sporangium helps them survive in adverse conditions until they have a chance to initiate growth under more favorable circumstances.