Which one of the followin pair is NOT correctly matched ?

Options

A. Red sea-Trichodesmium erythreum (BGA)
B. Red tides-Rhodymenia (Red algae)
C. Red snow-Chalmydomonas nivalis (Green algae)
D. Red rust of tea- Cephaleuros virescence (Green algae)

Answer

To determine which pair is NOT correctly matched, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Analyze Option A:**
- **Pair:** Red C and Trichodesmium erythraeum
- **Explanation:** Trichodesmium erythraeum is a filamentous cyanobacterium found in nutrient-poor tropical and subtropical oceans. This pair is correctly matched.

2. **Analyze Option B:**
- **Pair:** Red tides and Rhodimenia
- **Explanation:** Red tides refer to harmful algal blooms primarily caused by dinoflagellates, not Rhodimenia, which is a type of red algae. Therefore, this pair is NOT correctly matched.

3. **Analyze Option C:**
- **Pair:** Red snow and Chlamydomonas nivalis
- **Explanation:** Chlamydomonas nivalis is a green alga that can cause red snow due to its pigmentation. This pair is correctly matched.

4. **Analyze Option D:**
- **Pair:** Red rust of tea and Cephaleuros virescens
- **Explanation:** Cephaleuros virescens is indeed associated with the red rust disease in tea plants. This pair is correctly matched.

### Conclusion:
The pair that is NOT correctly matched is **Option B: Red tides and Rhodimenia**.

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