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Read the following statements and select...

Read the following statements and select the correct statements.
(i) DFC begins with dead inorganic matter.
(ii) DFC is the major conduit for energy flow in a terrestrial ecosystem
(ii) GFC of aquatic ecosystem is longer than a terrestrial ecosystem.
(iv) DFC and GFC are completely separate chains.

A

(i) and (ii)

B

(ii) and (iii)

C

(iii) and (iv)

D

(i) and (v)

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze each statement regarding the Detritus Food Chain (DFC) and Grazing Food Chain (GFC) and determine which statements are correct. ### Step-by-Step Solution: 1. **Evaluate Statement (i)**: "DFC begins with dead inorganic matter." - **Analysis**: This statement is incorrect. The Detritus Food Chain (DFC) begins with dead organic matter, which includes the remains of plants and animals, not inorganic matter. **Hint**: Remember that DFC is based on organic materials that have died, not inorganic substances. 2. **Evaluate Statement (ii)**: "DFC is the major conduit for energy flow in a terrestrial ecosystem." - **Analysis**: This statement is correct. In a terrestrial ecosystem, the DFC plays a significant role in recycling nutrients and energy flow, utilizing dead organic matter. **Hint**: Consider the role of decomposers and how they contribute to energy flow in ecosystems. 3. **Evaluate Statement (iii)**: "GFC of aquatic ecosystem is longer than a terrestrial ecosystem." - **Analysis**: This statement is correct. The Grazing Food Chain (GFC) in aquatic ecosystems typically has more trophic levels than in terrestrial ecosystems, making it longer. **Hint**: Think about the complexity of food webs in aquatic environments compared to terrestrial ones. 4. **Evaluate Statement (iv)**: "DFC and GFC are completely separate chains." - **Analysis**: This statement is incorrect. The DFC and GFC are interconnected; organisms from the DFC can serve as prey for organisms in the GFC, and the remains from the GFC contribute to the DFC. **Hint**: Consider how energy and nutrients cycle between different food chains in an ecosystem. ### Conclusion: - The correct statements are (ii) and (iii). - Therefore, the answer to the question is that the correct statements are the second and third ones. ### Final Answer: The correct statements are (ii) and (iii).
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