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, we will 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:** Mycetology is indeed the study of fungi. It is synonymous with mycology, which is the more commonly used term. Therefore, this statement is **true**.

### Step 2: Analyze Statement B
**Statement B:** Nutrition is heterotrophic and non-absorptive.

- **Analysis:** Fungi are known to have a heterotrophic mode of nutrition, meaning they obtain their food from organic compounds. However, they are also absorptive in nature, as they absorb nutrients from their environment through their mycelium. Therefore, saying that their nutrition is "non-absorptive" is incorrect. Thus, this statement is **false**.

### Step 3: Analyze Statement C
**Statement C:** The cell wall contains cellulose, lignocellulose, and chitin.

- **Analysis:** The cell wall of fungi is primarily composed of chitin, not cellulose or lignocellulose. Cellulose is found in the cell walls of plants, while lignocellulose is a complex of cellulose and lignin found in vascular plants. Therefore, this statement is **false**.

### Conclusion
After analyzing all the statements:
- Statement A is true.
- Statement B is false.
- Statement C is false.

Thus, the only true statement about fungi is **A**.

### Final Answer
**The correct answer is: A only.**

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