Select the correct statement.

Options

A. Sweet potato and potato are modified for storage.
B. Eyes of octopus and mammals are examples of homologous organs.
C. Resistance in microbes against certain antibiotics is an example of adaptive radiation.
D. The inheritance of acquired characters and natural selection are the two key concepts of Darwinian theory of evolution

Answer

To solve the question "Select the correct statement," we will analyze each of the given options step by step.

### Step 1: Analyze the First Statement
**Statement:** Sweet potato and potato are modified for storage.
- **Explanation:** Sweet potato is a root modification (a tuberous root), while potato is a stem modification (a tuber). Both serve the purpose of storage.
- **Conclusion:** This statement is **correct**.

### Step 2: Analyze the Second Statement
**Statement:** Eyes of octopus and mammals are examples of homologous organs.
- **Explanation:** The eyes of octopus and mammals have different origins; octopus eyes are derived from skin (ectoderm), while mammalian eyes are derived from the brain (neural ectoderm). They perform similar functions (vision) but are not homologous; they are analogous organs.
- **Conclusion:** This statement is **incorrect**.

### Step 3: Analyze the Third Statement
**Statement:** Resistance in microbes against certain antibiotics is an example of adaptive radiation.
- **Explanation:** Adaptive radiation refers to the process by which organisms diversify rapidly into a variety of forms to adapt to different environments. Resistance in microbes is a result of mutation and selection, not adaptive radiation.
- **Conclusion:** This statement is **incorrect**.

### Step 4: Analyze the Fourth Statement
**Statement:** The inheritance of acquired characters and natural selection are the two key concepts of Darwinian theory of evolution.
- **Explanation:** Natural selection is indeed a key concept of Darwinian evolution. However, the inheritance of acquired characters is a concept associated with Lamarckism, not Darwinism.
- **Conclusion:** This statement is **incorrect**.

### Final Conclusion
After analyzing all the statements, we find that the first statement is the only correct one. Therefore, the answer to the question is:

**Correct Statement:** Sweet potato and potato are modified for storage.

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