All the following are the features of inhibin hormone , except:
(a) Its secretion increases with increase in the number of spermatozoa.
(b) It stimulates FSH secretion in males
(c) It is secreted by sertoli cells
(d) It is a non-steroidal hormone .

Options

A. Its secretion increases with increase in the number of spermatozoa .
B. It stimulates FSH secretion in males
C. It is secreted by sertoli cells
D. It is a non-steroidal hormone .

Answer

To solve the question regarding the features of the inhibin hormone, we need to analyze each of the provided options and determine which one is incorrect.

### Step-by-Step Solution:

1. **Understanding Inhibin Hormone**:
- Inhibin is a hormone that plays a crucial role in regulating the production of follicle-stimulating hormone (FSH) from the pituitary gland. It is produced in both males and females, with different types (Inhibin A and Inhibin B).

2. **Analyzing Option A**:
- **Statement**: "Its secretion increases with an increase in the number of spermatozoa."
- **Evaluation**: This is correct. Inhibin secretion increases when there is a higher number of spermatozoa, as it helps to regulate and maintain sperm production.

3. **Analyzing Option B**:
- **Statement**: "It stimulates FSH secretion in males."
- **Evaluation**: This is incorrect. Inhibin actually inhibits the secretion of FSH from the pituitary gland in males, thus this statement does not correctly describe the function of inhibin.

4. **Analyzing Option C**:
- **Statement**: "It is secreted by Sertoli cells."
- **Evaluation**: This is correct. Inhibin is indeed secreted by Sertoli cells in the testes.

5. **Analyzing Option D**:
- **Statement**: "It is a non-steroidal hormone."
- **Evaluation**: This is correct. Inhibin is classified as a non-steroidal hormone.

6. **Conclusion**:
- The only statement that is not a feature of inhibin hormone is **Option B**, as it incorrectly states that inhibin stimulates FSH secretion in males.

### Final Answer:
**(b) It stimulates FSH secretion in males.**

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