In grass-deer-tiger food chain, grass biomass is one tonne. The tiger biomass shall be

Options

A. 100 kgs
B. 10 kgs
C. 200 kgs
D. 1 kg

Answer

To solve the question regarding the biomass of the tiger in the grass-deer-tiger food chain, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Food Chain**: The food chain consists of three trophic levels:
- **1st Trophic Level**: Grass (Producer)
- **2nd Trophic Level**: Deer (Primary Consumer)
- **3rd Trophic Level**: Tiger (Secondary Consumer)

2. **Identify the Given Information**:
- The biomass of grass is given as 1 tonne (which is equivalent to 1000 kg).

3. **Apply the 10% Law of Energy Transfer**:
- According to the 10% law, only 10% of the biomass (or energy) from one trophic level is transferred to the next trophic level.
- Therefore, from grass to deer:
- Biomass available for deer = 10% of grass biomass = 10% of 1000 kg = 100 kg.

4. **Calculate the Biomass for the Tiger**:
- Now, applying the 10% law again from deer to tiger:
- Biomass available for tiger = 10% of deer biomass = 10% of 100 kg = 10 kg.

5. **Conclusion**:
- The biomass of the tiger in this food chain is 10 kg.

### Final Answer:
The tiger biomass shall be **10 kg**.

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