Red tide in oceans is caused by rapid multiplication of :-

Options

A. BGA
B. Rhodophyceae
C. Diatoms
D. Dinoflagellate

Answer

**Step-by-Step Solution:**

1. **Understanding Red Tide**: Red tide refers to a phenomenon where coastal waters become discolored due to the rapid growth of certain microorganisms. This can lead to harmful effects on marine life and human health.

2. **Identifying the Organisms**: The question provides four options:
- Blue-green algae
- Rhodophaceae (red algae)
- Diatoms
- Dinoflagellates

3. **Analyzing Each Option**:
- **Blue-green algae**: These are also known as cyanobacteria and can cause blooms, but they are not primarily responsible for red tides.
- **Rhodophaceae (red algae)**: While they are marine organisms, they do not cause red tides.
- **Diatoms**: These are a type of phytoplankton that can bloom but are not typically associated with red tides.
- **Dinoflagellates**: These are a group of mostly marine, photosynthetic organisms that can multiply rapidly under certain conditions, leading to red tides.

4. **Conclusion**: Based on the analysis, the organism responsible for red tide due to rapid multiplication is **dinoflagellates**.

5. **Final Answer**: Red tide in oceans is caused by the rapid multiplication of **dinoflagellates**.

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