In a bread mould plant (Rhizopus fungus) What name is given to :
knob-like structure at the top of thin stem?

Answer

**Step-by-Step Solution:**

1. **Identify the Structure**: In the bread mould plant, specifically the Rhizopus fungus, there is a knob-like structure located at the top of a thin stem.

2. **Understand the Function**: This knob-like structure plays a crucial role in the reproduction of the fungus. It is involved in the production of spores, which are essential for the propagation of the fungus.

3. **Name the Structure**: The knob-like structure at the top of the thin stem is called the **sporangium**.

4. **Additional Information**: The sporangium contains spores, which are released into the environment. These spores can be carried by the wind to new locations where they can germinate and grow into new fungal organisms.

5. **Conclusion**: Therefore, the answer to the question is that the knob-like structure at the top of the thin stem in a bread mould plant (Rhizopus fungus) is called the **sporangium**.

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