Viruses are at a border line position between living and non living.
Phytoplanktons are those living organisms which are aquatic.

Options

A. If both A and R are correct and R is correct explanation of A
B. If both A and R are correct but R is not correct explanation of A
C. If A is correct, R is wrong
D. If both A and R are wrong.

Answer

**Step-by-Step Solution:**

1. **Understanding the Statements:**
- The first statement discusses viruses being at a borderline between living and non-living.
- The second statement defines phytoplanktons as aquatic living organisms.

2. **Analyzing the First Statement (Viruses):**
- Viruses exhibit characteristics of both living and non-living entities.
- They can reproduce only inside a host cell, which is a characteristic of living organisms.
- However, outside a host, they do not exhibit any signs of life, which aligns with non-living entities.

3. **Analyzing the Second Statement (Phytoplanktons):**
- Phytoplanktons are microscopic organisms found in aquatic environments, including freshwater and saltwater.
- They can be classified as bacteria, protists, or single-celled plants, all of which are living organisms.

4. **Evaluating the Relationship Between the Two Statements:**
- While both statements are correct, they do not explain or relate to each other.
- The nature of viruses does not provide any explanation for the characteristics of phytoplanktons, and vice versa.

5. **Reviewing the Options:**
- Option A: Both statements are correct, and R explains A. (Incorrect, as R does not explain A)
- Option B: Both statements are correct, but R does not explain A. (Correct)
- Option C: A is correct, and R is wrong. (Incorrect, as R is correct)
- Option D: Both A and R are wrong. (Incorrect, as both are correct)

6. **Conclusion:**
- The correct answer is Option B: Both A and R are correct, but R is not a correct explanation of A.

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