Mammary glands are modified
(a) Sweat gland
(b) Sebaceous gland
(c) Lacrymal gland
(d) Endocrine gland

Options

A. Sweat gland
B. Sebaceous gland
C. Lacrymal gland
D. Endocrine gland

Answer

To solve the question regarding what mammary glands are modified from, we will analyze each option provided.

### Step-by-Step Solution:

1. **Understanding Mammary Glands**:
- Mammary glands are specialized organs in mammals that produce milk to nourish infants.

2. **Analyzing Option (a): Sweat Gland**:
- Sweat glands are responsible for producing sweat, which helps regulate body temperature.
- Mammary glands are considered modified sweat glands because they produce milk, which can be seen as a specialized form of sweat.

3. **Analyzing Option (b): Sebaceous Gland**:
- Sebaceous glands secrete sebum, an oily substance that lubricates the skin and hair.
- They do not produce milk and are not related to mammary glands.

4. **Analyzing Option (c): Lacrimal Gland**:
- Lacrimal glands are responsible for producing tears, which help lubricate the eyes.
- They are not involved in the production of milk, making this option incorrect.

5. **Analyzing Option (d): Endocrine Gland**:
- Endocrine glands secrete hormones directly into the bloodstream.
- While they play important roles in bodily functions, they do not relate to the production of milk.

6. **Conclusion**:
- After analyzing all options, the correct answer is (a) Sweat gland, as mammary glands are modified sweat glands.

### Final Answer:
Mammary glands are modified (a) Sweat gland.

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