An important evidence in favour of organic evolution is the occurrence of `:`

Options

A. analogous and vestigial organs
B. homologous organs only
C. homologous and analogous organs
D. homologous and vestigial organs

Explanation

To answer the question "An important evidence in favour of organic evolution is the occurrence of:", we need to identify the types of organs that provide evidence for evolution.

### Step-by-Step Solution:

1. **Understand the Types of Organs**:
- There are two main types of organs that provide evidence for evolution: homologous organs and analogous organs.

2. **Define Homologous Organs**:
- Homologous organs are those that have a similar structure and origin but have evolved to perform different functions. This indicates a common ancestry.
- **Examples**: The forelimbs of different animals like bats (for flying), cheetahs (for running), whales (for swimming), and humans (for grasping) are homologous.

3. **Define Analogous Organs**:
- Analogous organs are those that perform similar functions but have different evolutionary origins. This indicates convergent evolution.
- **Examples**: The eyes of octopuses and mammals serve the same function (vision) but have different structures and origins.

4. **Identify the Correct Answer**:
- Given the definitions and examples, the occurrence of both homologous and analogous organs provides important evidence for organic evolution. Therefore, the correct answer to the question is that both homologous and analogous organs are important evidence in favor of organic evolution.

5. **Eliminate Incorrect Options**:
- Other types of organs mentioned, such as vestigial organs, are not as strong evidence for evolution compared to homologous and analogous organs. Vestigial organs are remnants of organs that have lost their original function, which does not directly support the concept of evolution as strongly as the other two types.

### Final Answer:
The important evidence in favour of organic evolution is the occurrence of homologous and analogous organs.

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