Select the incorrect statement from the following.

Options

A. Morels and truffles are poisonous mushrooms.
B. Yeast is unicellular and useful in fermentation.
C. Penicillium is multicellular and produces antibiotics.
D. Protists have photosynthetic and heterotrophic modes of nutrition

Answer

To solve the question, we need to evaluate each statement provided and identify which one is incorrect.

### Step-by-Step Solution:

1. **Evaluate the First Statement:**
- **Statement:** Morals and truffles are poisonous mushrooms.
- **Analysis:** Morals (morels) and truffles are types of fungi that are edible and considered delicacies. They belong to the Ascomycetes group and are not poisonous.
- **Conclusion:** This statement is incorrect.

2. **Evaluate the Second Statement:**
- **Statement:** Yeast is unicellular and is useful in fermentation.
- **Analysis:** Yeast, such as Saccharomyces cerevisiae, is indeed unicellular and plays a crucial role in fermentation processes, including the production of alcoholic beverages and bread.
- **Conclusion:** This statement is correct.

3. **Evaluate the Third Statement:**
- **Statement:** Penicillium is multicellular and produces antibiotics.
- **Analysis:** Penicillium is a genus of fungi that is multicellular and is well-known for producing antibiotics, particularly penicillin, which is effective against bacteria.
- **Conclusion:** This statement is correct.

4. **Evaluate the Fourth Statement:**
- **Statement:** Protists have photosynthetic and heterotrophic modes of nutrition.
- **Analysis:** Protists include a diverse group of organisms. Some, like diatoms, are photosynthetic (photoautotrophs), while others, like protozoans, are heterotrophic and depend on other organisms for nutrition.
- **Conclusion:** This statement is correct.

### Final Conclusion:
The only incorrect statement is the first one: "Morals and truffles are poisonous mushrooms."

### Answer:
The incorrect statement is: **Morals and truffles are poisonous mushrooms.**

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