Which of the food chain directly depends on solar radiations?

Options

A. Parasitic
B. Grazing
C. Detritus
D. None of these

Answer

**Step-by-Step Solution:**

1. **Understanding Food Chains**: A food chain is a sequence of organisms where each is eaten by the next in the chain. It illustrates the flow of energy and nutrients in an ecosystem.

2. **Types of Food Chains**: There are different types of food chains, including:
- **Grazing Food Chain**: Starts with green plants (producers) that utilize solar energy through photosynthesis.
- **Detritus Food Chain**: Begins with decomposing organic matter and does not directly rely on solar energy.
- **Parasitic Food Chain**: Involves organisms that derive nutrients from a host, which also does not directly depend on solar energy.

3. **Identifying Solar Dependency**: The question asks which food chain directly depends on solar radiation.
- In the grazing food chain, the energy at the lowest trophic level comes from photosynthesis, which is powered by solar energy.
- In contrast, the detritus and parasitic food chains do not derive their initial energy from solar radiation.

4. **Conclusion**: Since the grazing food chain is the only type that directly relies on solar radiation for its energy source, it is the correct answer.

5. **Final Answer**: The food chain that directly depends on solar radiation is the **Grazing Food Chain**.

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