The thymus secretes the ...... hormone called ….... which play a major role in the differentiation of ……... lymphocytes.
(a) Gylcoproteinaceous , thymosin ,T
(b) Steroid , thymosin , T
(c) Peptide , thymosin T
(d) Peptide , thymosin , B

Options

A. Gylcoproteinaceous , thymosin ,T
B. Steroid , thymosin , T
C. Peptide , thymosin T
D. Peptide , thymosin , B

Answer

To solve the question regarding the thymus and its secretions, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Organ and Its Function**: The question mentions the thymus, which is a primary lymphoid organ. Its main function is to produce and differentiate a specific type of lymphocyte.

2. **Determine the Type of Lymphocyte**: The thymus is primarily associated with T lymphocytes (also known as T cells). These are crucial for the adaptive immune response.

3. **Identify the Hormone Secreted by the Thymus**: The thymus secretes a hormone that plays a significant role in the differentiation of T lymphocytes. This hormone is known as thymosin.

4. **Classify the Type of Hormone**: Thymosin is classified as a peptide hormone, which is a type of polypeptide. It is not a glycoprotein or steroid hormone.

5. **Match the Information with the Options**:
- (a) Glycoproteinaceous, thymosin, T - Incorrect (not glycoproteinaceous)
- (b) Steroid, thymosin, T - Incorrect (not steroid)
- (c) Peptide, thymosin, T - Correct (thymosin is a peptide hormone and it acts on T lymphocytes)
- (d) Peptide, thymosin, B - Incorrect (thymosin acts on T lymphocytes, not B lymphocytes)

6. **Select the Correct Option**: Based on the analysis, the correct answer is option (c) Peptide, thymosin, T.

### Final Answer:
The thymus secretes the **peptide** hormone called **thymosin**, which plays a major role in the differentiation of **T** lymphocytes. Therefore, the correct option is (c).

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