Find the ODD one out.

Options

A. Eye of Octopus and mammals
B. Flippers of penguin and dolphins
C. Sweet potato and potato
D. Upper limb of man and forelimbs of cheetah .

Answer

To solve the question "Find the ODD one out," we need to analyze the given options based on the concept of analogous and homologous organs.

### Step-by-Step Solution:

1. **Identify the Options:**
- Option 1: Eye of Octopus and Mammal
- Option 2: Flippers of Penguin and Dolphin
- Option 3: Sweet potato and Potato
- Option 4: Upper limb of man and forelimb of cheetah

2. **Define Analogous Organs:**
- Analogous organs are those that have different structures but perform similar functions. They arise from different evolutionary origins.

3. **Analyze Each Option:**
- **Option 1:** The eye of an octopus (a mollusk) and the eye of a mammal (a vertebrate) serve the same function (vision) but have different structures. This is an example of analogous organs.
- **Option 2:** The flippers of penguins (birds) and dolphins (mammals) are used for swimming. They have different structures but serve the same function. This is also an example of analogous organs.
- **Option 3:** Sweet potato (a root vegetable) and potato (a tuber) are both used as food but are different in structure and origin. They are not organs but can be considered analogous in terms of their function as food sources.
- **Option 4:** The upper limb of a man (a mammal) and the forelimb of a cheetah (also a mammal) have similar structures and are derived from a common ancestor, but they serve different functions (man uses it for manipulation, while the cheetah uses it for running). This is an example of homologous organs.

4. **Conclusion:**
- The odd one out is **Option 4** (Upper limb of man and forelimb of cheetah) because it represents homologous organs, while the other options represent analogous organs.

### Final Answer:
The correct answer is **Option 4**.

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