Which of these belong to the category of primary consumers ?

Options

A. Insects and cattle
B. Eagle and snakes
C. Water insects and lizards
D. Snakes and frogs

Answer

To determine which of the given options belong to the category of primary consumers, we need to understand what primary consumers are.

### Step-by-Step Solution:

1. **Define Primary Consumers**:
- Primary consumers are organisms that eat producers (plants). They are the second trophic level in an ecosystem, feeding on the first trophic level, which consists of producers (like plants and algae).

2. **Analyze the Options**:
- **Option A: Insects and Cattle**:
- Insects can be primary consumers as they often feed on plants (producers). Cattle also feed on grass and other plants, making them primary consumers as well.
- **Option B: Eagle and Snakes**:
- Eagles and snakes are typically secondary or tertiary consumers as they feed on primary consumers (like rodents or other smaller animals).
- **Option C: Water Insects and Lizards**:
- Water insects can be primary consumers if they feed on aquatic plants. However, lizards can be secondary consumers depending on their diet, as they often eat insects.
- **Option D: Snakes and Frogs**:
- Both snakes and frogs are generally secondary consumers as they primarily eat other animals (like insects or small mammals).

3. **Conclusion**:
- After analyzing all the options, **Option A: Insects and Cattle** is the only pair that consists entirely of primary consumers. Therefore, the correct answer is **Option A**.

### Final Answer:
The organisms that belong to the category of primary consumers are **Insects and Cattle (Option A)**.

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