Which one is correctly matched ?

Options

A. Tears - Excretion of salts
B. Sweat - Thermoregulation
C. Salilva - Testing food
D. Statolith - Sexual attraction.

Answer

To determine which option is correctly matched, let's analyze each option step by step:

### Step 1: Analyze Option A - Tears, excretion of salts
- **Explanation**: Tears are produced by the lacrimal glands in the eyes. While tears do contain some salts (like sodium chloride), their primary function is to lubricate the eyes and provide protection, not primarily for the excretion of salts.
- **Conclusion**: This option is **incorrect**.

### Step 2: Analyze Option B - Sweat, thermoregulation
- **Explanation**: Sweat is produced by sweat glands and plays a crucial role in thermoregulation. When the body temperature rises, sweat is secreted onto the skin's surface, where it evaporates and cools the body down.
- **Conclusion**: This option is **correct**.

### Step 3: Analyze Option C - Saliva, testing food
- **Explanation**: Saliva is produced in the salivary glands and serves multiple functions, including lubricating food and initiating digestion (especially of carbohydrates through the enzyme salivary amylase). However, it is not primarily used for testing food; taste is detected by taste buds on the tongue.
- **Conclusion**: This option is **incorrect**.

### Step 4: Analyze Option D - Statoliths, sexual attraction
- **Explanation**: Statoliths are structures found in certain invertebrates that help in sensing gravity and maintaining balance. They are not related to sexual attraction.
- **Conclusion**: This option is **incorrect**.

### Final Conclusion
After analyzing all options, the only correctly matched option is **B. Sweat, thermoregulation**.