Forelimbs of cat, lizard used in walking , fore-limbs of whale used in swimming and forelimbs of bats used in flying are an example of :

Options

A. Analogous organs
B. Adaptive radiation
C. Homologous organs
D. Convergent evolution.

Answer

To solve the question regarding the forelimbs of different organisms and their classification, we will analyze the characteristics of the forelimbs mentioned in the question.

### Step-by-Step Solution:

1. **Identify the Forelimbs and Their Functions**:
- Forelimbs of a cat: Used for walking.
- Forelimbs of a lizard: Used for walking.
- Forelimbs of a whale: Used for swimming.
- Forelimbs of a bat: Used for flying.

2. **Analyze the Similarities and Differences**:
- All these forelimbs are structurally similar in terms of bone structure (e.g., humerus, radius, and ulna).
- However, they serve different functions based on the environment of each organism (walking, swimming, flying).

3. **Understand the Types of Organs**:
- **Analogous Organs**: Different structure and origin but perform similar functions (e.g., wings of birds and insects).
- **Homologous Organs**: Similar structure and origin but perform different functions (e.g., forelimbs of mammals).
- **Adaptive Radiation**: Different structures evolve from a common ancestor due to adaptation to different environments.
- **Convergence**: Similar functions arise independently in different species.
- **Evolution**: The process of change over time in the characteristics of a species.

4. **Determine the Correct Classification**:
- Since the forelimbs of the cat, lizard, whale, and bat share a similar structural origin but have adapted to perform different functions, they are classified as **homologous organs**.

5. **Select the Correct Option**:
- Based on the analysis, the correct answer to the question is **C: Homologous organs**.