Seminal plasma in humans is rich in

Options

A. fructose and calcium but has no enzymes
B. glucose and certain enzymes but has no calcium
C. fructose and certain enzymes but poor in calcium
D. fructose, calcium and certain enzymes.

Explanation

**Step-by-Step Solution:**

1. **Understanding Seminal Plasma**: Seminal plasma is a fluid that is part of semen, which is produced by male reproductive glands. It contains various substances that support sperm function.

2. **Components of Seminal Plasma**: The seminal plasma is primarily composed of secretions from three male accessory glands:
- Seminal vesicles
- Prostate gland
- Bulbo-urethral (Cowper's) glands

3. **Key Constituents**: The seminal plasma is rich in several important substances:
- **Fructose**: This sugar provides energy to sperm cells.
- **Calcium**: Essential for various physiological processes, including sperm motility.
- **Enzymes**: These are important for the liquefaction of semen and other functions.

4. **Evaluating Options**: When presented with options regarding what seminal plasma is rich in, we can analyze them:
- Option 1: Fructose and calcium but no enzymes (Incorrect)
- Option 2: Glucose (Incorrect, as glucose is not a major component)
- Option 3: Fructose and certain enzymes but poor in calcium (Incorrect)
- Option 4: Fructose, calcium, and salts (Correct)

5. **Conclusion**: Therefore, the correct answer is that seminal plasma in humans is rich in fructose, calcium, and salts.

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