Which of the following statement are/ is true for fungi ?
a. The branch of science which deals with the study of fungi is termed as mycetology.
b. Nutrition is heterotrophic and non - absorptive
c. The cell - wall contains cellulose , lignocellulose and chitin.

Options

A. a and c
B. b only
C. a only
D. a and d

Answer

To determine which statements about fungi are true, let's analyze each statement one by one.

### Step 1: Analyze Statement A
- **Statement A**: "The branch of science which deals with the study of fungi is termed as mycetology."
- **Analysis**: This statement is true. The correct term for the study of fungi is indeed mycology, not mycetology. However, mycetology is often used interchangeably in some contexts, but the more widely accepted term is mycology.

### Step 2: Analyze Statement B
- **Statement B**: "Nutrition is heterotrophic and non-absorptive."
- **Analysis**: This statement is false. Fungi are heterotrophic organisms, which means they obtain their nutrients from other organic sources. However, they are absorptive heterotrophs, meaning they secrete enzymes to break down complex substances and then absorb the resulting small organic molecules.

### Step 3: Analyze Statement C
- **Statement C**: "The cell wall contains cellulose, lignocellulose, and chitin."
- **Analysis**: This statement is also false. The cell wall of fungi is primarily composed of chitin. Cellulose and lignocellulose are components of plant cell walls, not fungi.

### Conclusion
Based on the analysis:
- Statement A is true.
- Statement B is false.
- Statement C is false.

Thus, the only true statement regarding fungi is **Statement A**.

### Final Answer
The correct answer is: **Only Statement A is true.**

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