Thermoregulatory glands present in the skin of mammals are

Options

A. sebaceous
B. sudoriferous glands
C. mammary glands
D. uropygial glands

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the thermoregulatory glands present in the skin of mammals. We need to identify which of the given options serves this purpose.

2. **Analyzing the Options**:
- **Uropygial Glands**: These are also known as preen glands and are found in birds, not mammals. They produce oils for feather maintenance. Therefore, this option is incorrect.
- **Mammary Glands**: These glands are specific to mammals and are responsible for producing milk to nourish young ones. They do not play a role in thermoregulation. Thus, this option is also incorrect.
- **Sebaceous Glands**: These glands produce sebum, an oily substance that helps to keep the skin moist but is not primarily involved in thermoregulation. Hence, this option is incorrect as well.
- **Pseudo-sweat Glands (Sweat Glands)**: These glands are responsible for producing sweat, which helps in cooling the body through evaporation. They play a significant role in thermoregulation in mammals.

3. **Conclusion**: Based on the analysis, the correct answer to the question is the **Pseudo-sweat Glands**, also known as sweat glands, as they are responsible for thermoregulation in mammals.

### Final Answer:
The thermoregulatory glands present in the skin of mammals are **Pseudo-sweat Glands (Sweat Glands)**.

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