Fertilization in frog is

Options

A. external
B. internal
C. both
D. none of these

Answer

**Step-by-Step Solution:**

1. **Understanding Fertilization**: Fertilization is the process where a sperm cell from a male organism merges with an egg cell from a female organism. This can occur in two main ways: external fertilization and internal fertilization.

2. **Defining External Fertilization**: External fertilization occurs when the sperm and egg meet outside the female's body. This is common in aquatic animals where eggs are released into the water, and sperm is released simultaneously to fertilize the eggs.

3. **Defining Internal Fertilization**: Internal fertilization occurs when the sperm fertilizes the egg inside the female's body. This is typical in many terrestrial animals, including humans.

4. **Fertilization in Frogs**: In the case of frogs, the female lays her eggs in water. The male frog then releases sperm into the water, where it meets and fertilizes the eggs. This process clearly indicates that fertilization occurs outside the female's body.

5. **Conclusion**: Therefore, for the question regarding fertilization in frogs, the correct answer is that it is external fertilization.

**Final Answer**: The fertilization in frogs is **external**.

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