If 20kJ energy is available at the producer level , then how much energy will be transferred to the lion in the food chain : producer `rarr ` deer rarr` lion ?

Options

A. 0.2 kJ
B. 0.02 kJ
C. 0.002 kJ
D. 2 kJ

Answer

To determine how much energy will be transferred to the lion in the food chain (producer → deer → lion), we can follow these steps:

### Step 1: Identify the energy available at the producer level.
The energy available at the producer level is given as 20 kJ.

### Step 2: Calculate the energy transferred to the primary consumer (deer).
In a food chain, only about 10% of the energy from one trophic level is transferred to the next trophic level. Therefore, we can calculate the energy available to the deer (the primary consumer) as follows:

\[ \text{Energy available to deer} = 10\% \text{ of energy from producers} = 0.10 \times 20 \text{ kJ} = 2 \text{ kJ} \]

### Step 3: Calculate the energy transferred to the secondary consumer (lion).
Now, we need to calculate the energy that will be transferred to the lion (the secondary consumer) from the deer. Again, we apply the 10% rule:

\[ \text{Energy available to lion} = 10\% \text{ of energy from deer} = 0.10 \times 2 \text{ kJ} = 0.2 \text{ kJ} \]

### Conclusion:
The amount of energy that will be transferred to the lion in the food chain is **0.2 kJ**.

### Final Answer:
The correct option is **a) 0.2 kJ**.

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