Measurement of biomass is more accurate in terms of

Options

A. Dry weight
B. Fresh weight
C. Both (a) and ( b)
D. Detritus

Answer

To solve the question regarding the accuracy of biomass measurement, we will analyze the options provided and determine which method yields a more reliable result.

### Step-by-Step Solution:

1. **Understanding Biomass Measurement**: Biomass can be measured in two main ways: dry weight and fresh weight. Each method has its own characteristics and implications for accuracy.

2. **Fresh Weight Measurement**:
- Fresh weight refers to the total weight of the biomass, including water content.
- The fresh weight can fluctuate due to environmental factors such as seasonal changes (e.g., wet and dry seasons).
- Because of these variations, fresh weight can be inconsistent and may not accurately reflect the actual biomass present.

3. **Dry Weight Measurement**:
- Dry weight is determined by removing all the water content from the biomass and measuring the remaining solid material.
- This method provides a more stable and consistent measurement because the water content does not affect the results.
- Dry weight remains constant regardless of environmental conditions, making it a more reliable indicator of biomass.

4. **Conclusion**: Given that dry weight is less variable and provides a more stable measure of biomass, it is considered the more accurate method of measurement compared to fresh weight.

### Final Answer:
The measurement of biomass is more accurate in terms of **dry weight**.

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