Absolute growth rate can be best defined as

Options

A. It is growth rate in whole life .
B. It is growth from birth to death .
C. Measurement and the comparison of total growth rate per unit time
D. Per unit initial parameters

Answer

To solve the question regarding the definition of absolute growth rate, we can break down the information provided in the video transcript step by step.

### Step-by-Step Solution:

1. **Understanding Absolute Growth Rate**:
- Absolute growth rate refers to the increase in size or mass of a plant over a specific period of time and within a defined area. It is a measure of how much a plant grows in terms of weight or size.

2. **Units of Measurement**:
- The absolute growth rate is typically expressed in units such as grams per day (g/day). This indicates the amount of growth (in grams) that occurs each day.

3. **Evaluating Options**:
- The question provides several options to define absolute growth rate. We need to analyze each option to determine which one accurately describes it.

4. **Analyzing the Options**:
- **Option 1**: "It is the growth rate in the whole life."
- This is incorrect because absolute growth rate is measured over a specific time, not the entire lifespan of the plant.
- **Option 2**: "It is the growth from birth to death."
- This is also incorrect for the same reason; it does not consider a specific time frame but rather the entire life cycle.
- **Option 3**: "Measurement and comparison of total growth rate per unit area."
- This option is correct as it aligns with the definition of absolute growth rate, which involves measuring growth in a specific area over a defined time.
- **Option 4**: "Per unit initial parameter."
- This is incorrect because absolute growth rate does not involve initial parameters; it focuses on growth over time.

5. **Conclusion**:
- Based on the analysis, the correct definition of absolute growth rate is found in **Option 3**: "Measurement and comparison of total growth rate per unit area."

### Final Answer:
The absolute growth rate can be best defined as the measurement and comparison of total growth rate per unit area.