Which of the following is primary producer ?

Options

A. Phytoplanktons
B. Grasshopper
C. Zooplanktons
D. Fishes

Answer

To determine which of the given organisms is a primary producer, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definition of Primary Producers**:
- Primary producers are organisms that produce their own food through photosynthesis. They are the first trophic level in an ecosystem.

2. **Identify the Given Organisms**:
- The organisms listed are:
- Phytoplanktons
- Grasshoppers
- Zooplanktons
- Fishes

3. **Analyze Each Organism**:
- **Phytoplanktons**: These are microscopic plants found in aquatic environments that perform photosynthesis, making them primary producers.
- **Grasshoppers**: These are herbivores that feed on plants, so they are primary consumers, not producers.
- **Zooplanktons**: These are small animals that feed on phytoplankton, classifying them as secondary consumers.
- **Fishes**: These are typically carnivores that feed on other organisms, placing them in higher trophic levels.

4. **Conclusion**:
- Based on the analysis, the only organism that fits the definition of a primary producer is **Phytoplankton**.

### Final Answer:
- The primary producer among the given options is **Phytoplankton**.

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