In aquatic ecosystem, ……..(i)………..is the major conduit for energy flow, as against in the terrestrial ecosystem, a much larger fraction of energy flows through the ……….(ii)……….than ……….(iii)……

Options

A. (i) - GFC, (ii) - DFC , (iii) - GFC
B. (i) - DFC , (ii) - GFC , (iii) - DFC
C. (i) - GFC, (ii) - GFC , (iii) - DFC
D. (i) - DFC , (ii) - DFC , (iii) - GFC

Answer

To solve the question, we need to fill in the blanks with the appropriate terms related to energy flow in aquatic and terrestrial ecosystems.

### Step-by-Step Solution:

1. **Understanding the Ecosystems**:
- In an aquatic ecosystem, energy primarily flows through a specific type of food chain.
- In contrast, in a terrestrial ecosystem, energy flows through a different type of food chain.

2. **Identifying the Food Chains**:
- The two main types of food chains are the **grazing food chain** (GFC) and the **detritus food chain** (DFC).
- The grazing food chain starts with producers (like plants) and flows through herbivores to carnivores.
- The detritus food chain starts with dead organic matter and primarily involves decomposers.

3. **Filling in the Blanks**:
- For the first blank (i), we identify that in the aquatic ecosystem, the major conduit for energy flow is the **grazing food chain**.
- For the second blank (ii), we recognize that in the terrestrial ecosystem, a larger fraction of energy flows through the **detritus food chain**.
- For the third blank (iii), we note that energy flows less through the **grazing food chain** in terrestrial ecosystems compared to the detritus food chain.

4. **Final Answer**:
- The completed statement is:
- In aquatic ecosystem, **grazing food chain** is the major conduit for energy flow, as against in the terrestrial ecosystem, a much larger fraction of energy flows through the **detritus food chain** than **grazing food chain**.