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 analyze the four statements provided and identify which one is incorrect. Here’s a step-by-step breakdown:

### Step 1: Analyze the Statements
1. **Statement 1**: "Morals and truffles are poisonous mushrooms."
- This statement claims that morals and truffles are poisonous. However, both morals (morels) and truffles are known to be edible fungi, making this statement incorrect.

2. **Statement 2**: "Fungi are divided into four classes: Phycomycetes, Ascomycetes, Basidiomycetes, and Deuteromycetes."
- This statement correctly identifies the classification of fungi into four major groups. Therefore, this statement is correct.

3. **Statement 3**: "Yeast is unicellular and useful in fermentation."
- Yeast, particularly Saccharomyces, is indeed a unicellular fungus that is widely used in fermentation processes. This statement is also correct.

4. **Statement 4**: "Penicillium is a multicellular fungus and it produces antibiotics."
- This statement is accurate as Penicillium is a multicellular fungus known for producing the antibiotic penicillin. Thus, this statement is correct.

### Step 2: Identify the Incorrect Statement
From the analysis above, the first statement is the only incorrect one, as it falsely claims that morals and truffles are poisonous when they are actually edible.

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

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