Frogs undergo complete metamorphosis. Which figure represents the life cycle of frogs?

Options

A.
B.
C.
D.

Answer

### Step-by-Step Solution:

1. **Understanding Metamorphosis**:
- Metamorphosis is the process of transformation that occurs in certain animals, including frogs. It involves distinct stages in the life cycle where the organism changes its form and structure.

2. **Identifying Life Cycle Stages**:
- The life cycle of frogs consists of several key stages:
- **Egg Stage**: Frogs lay eggs in water.
- **Tadpole Stage**: The eggs hatch into tadpoles, which are aquatic and have tails.
- **Development of Legs**: As tadpoles grow, they develop hind legs first, followed by front legs.
- **Adult Frog Stage**: Eventually, the tadpole undergoes further changes and becomes a fully developed adult frog.

3. **Analyzing the Figures**:
- You need to look at the figures provided and identify which one accurately represents the stages of the frog's life cycle.
- The correct figure should show:
- Eggs hatching into tadpoles.
- Development of legs (first hind legs, then front legs).
- The final stage should depict an adult frog.

4. **Selecting the Correct Figure**:
- After analyzing the figures:
- The first figure shows the eggs hatching into tadpoles, the development of legs, and finally the adult frog. This is the correct representation of the frog's life cycle.
- The other figures do not accurately depict the complete metamorphosis stages.

5. **Conclusion**:
- The figure that represents the life cycle of frogs is the **first figure**.