If 0.16 kJ is the NSP in tertiary carnivores what is the NPP in that ecosystem (Note: 0.01% of NPP is transfered to the tertiary carnivores

Options

A. 80 J
B. 400 J
C. 1600 KJ
D. 8000 KJ

Answer

To find the Net Primary Productivity (NPP) in the ecosystem given that the Net Secondary Productivity (NSP) in tertiary carnivores is 0.16 kJ and that only 0.01% of NPP is transferred to the tertiary carnivores, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the relationship between NSP and NPP**:
- NSP is the energy available to the tertiary carnivores after accounting for energy lost at lower trophic levels.
- We know that only 0.01% of the NPP is transferred to the tertiary carnivores.

2. **Set up the equation**:
- If NSP = 0.16 kJ and this represents 0.01% of NPP, we can express this relationship mathematically:
\[ NSP = \frac{0.01}{100} \times NPP \]
- Rearranging this gives us:
\[ NPP = \frac{NSP \times 100}{0.01} \]

3. **Substitute the given NSP value**:
- Now substitute NSP = 0.16 kJ into the equation:
\[ NPP = \frac{0.16 \times 100}{0.01} \]

4. **Calculate NPP**:
- Perform the calculation:
\[ NPP = \frac{16.0}{0.01} = 1600 \text{ kJ} \]

5. **Conclusion**:
- Therefore, the NPP in that ecosystem is 1600 kJ.

### Final Answer:
The NPP in that ecosystem is **1600 kJ**.

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