If 20J of energy is trapped at producer leve, then how much energy will be available to peacock as food in the following chain?
`" Plant "to " Mice "to " Snake "to " Peacock"`

Options

A. 0.0002J
B. 0.02J
C. 0.002J
D. 0.2J

Answer

To determine how much energy will be available to the peacock in the given food chain (Plant → Mice → Snake → Peacock), we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Initial Energy at the Producer Level**:
- The energy trapped by the producers (plants) is given as 20 Joules.

2. **Apply the 10% Energy Transfer Rule**:
- According to the 10% law of energy transfer (proposed by Raymond Lindemann), only 10% of the energy is passed on to the next trophic level.

3. **Calculate Energy Transfer from Plants to Mice**:
- Energy available to Mice = 10% of Energy from Plants
- Energy available to Mice = 10% of 20 Joules = 2 Joules.

4. **Calculate Energy Transfer from Mice to Snake**:
- Energy available to Snake = 10% of Energy from Mice
- Energy available to Snake = 10% of 2 Joules = 0.2 Joules.

5. **Calculate Energy Transfer from Snake to Peacock**:
- Energy available to Peacock = 10% of Energy from Snake
- Energy available to Peacock = 10% of 0.2 Joules = 0.02 Joules.

6. **Final Answer**:
- The energy available to the peacock as food is 0.02 Joules.

### Summary:
- Energy at Producer Level (Plants): 20 Joules
- Energy to Mice: 2 Joules
- Energy to Snake: 0.2 Joules
- Energy to Peacock: 0.02 Joules

Thus, the answer is **0.02 Joules**.

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