What is function of copper-T?

Options

A. Stops cleavage
B. Stops fertilization
C. Checks mutation
D. Stops gastrulation

Answer

### Step-by-Step Solution:

1. **Understanding Copper-T**: Copper-T is a type of intrauterine device (IUD) used for contraception. It is inserted into the uterus by a healthcare professional.

2. **Function of Copper-T**: The primary function of Copper-T is to prevent pregnancy. It does this by releasing copper ions into the uterus.

3. **Mechanism of Action**: The copper released by Copper-T has several effects:
- It creates an environment in the uterus that is toxic to sperm.
- It suppresses sperm motility, meaning that sperm cannot swim effectively.
- It reduces the fertilizing capacity of sperm, making it less likely for sperm to fertilize an egg.

4. **Evaluating the Options**:
- **Option A: Stops cleavage** - Cleavage refers to the division of the fertilized egg, which is not directly affected by Copper-T.
- **Option B: Stops fertilization** - This is correct as Copper-T prevents sperm from fertilizing the egg.
- **Option C: Checks mutation** - This is unrelated to the function of Copper-T.
- **Option D: Stops crystallization** - This is also unrelated to the function of Copper-T.

5. **Conclusion**: Based on the mechanism of action of Copper-T, the correct answer is **Option B: stops fertilization**.