Which of the following is an example of analogous organ?

Options

A. Flippers of penguins and dolphin
B. Fins of shark and whale
C. Eye of octopus and of mammal
D. All of these

Answer

To determine which of the following is an example of analogous organs, we need to understand the concept of analogous organs. Analogous organs are those that perform similar functions but have different evolutionary origins. Here’s a step-by-step solution:

### Step 1: Understand the Definition of Analogous Organs
Analogous organs are structures that serve similar functions in different species but do not share a common ancestor. This means that while they may look or function similarly, they evolved independently.

**Hint:** Remember that analogous organs arise due to convergent evolution.

### Step 2: Analyze the Given Options
We need to examine the options provided to identify which pairs of organs are analogous.

1. **Flipper of Penguin and Dolphin**:
- Penguins are birds (avian), while dolphins are mammals.
- Both have flippers that serve the function of swimming, but they evolved from different ancestors.

2. **Fin of Shark and Fin of Whale**:
- Sharks are cartilaginous fish, and whales are mammals.
- Both fins serve the function of swimming, but they have different evolutionary backgrounds.

3. **Eye of Octopus and Eye of Mammal**:
- The eye of an octopus (a cephalopod) and the eye of a mammal (like humans) serve the function of vision.
- They have evolved independently, despite having similar functions.

4. **All of These**: This option suggests that all the previous examples are analogous organs.

### Step 3: Identify the Correct Answer
Since all the pairs listed (flipper of penguin and dolphin, fin of shark and whale, eye of octopus and eye of mammal) are indeed analogous organs, the correct answer is:

**Answer: All of these.**

### Step 4: Conclusion
In conclusion, the correct choice is that all the options provided are examples of analogous organs, as they perform similar functions but have different evolutionary origins.

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