Low temperature is required in Apple for a duration of

Options

A. 800 hours
B. 400 hrs
C. 200 hrs
D. 100 hrs.

Answer

To solve the question regarding the low temperature requirement for apple trees, we can break it down into the following steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the duration of low temperature required for apple trees.

2. **Identify the Growth Stages**: Recognize that apple trees have different growth stages that require varying amounts of cold exposure.

3. **Research Cold Requirements**: Apple trees require a certain number of chilling hours at low temperatures to break dormancy and ensure proper flowering and fruiting.

4. **Determine the Duration**: Based on the information, it is known that apple trees typically require around 800 hours of chilling at temperatures below a certain threshold (usually around 0-7 degrees Celsius) for optimal growth.

5. **Select the Correct Option**: From the options provided (800 hours, 400 hours, 200 hours, 100 hours), the correct answer is 800 hours, as this is the duration needed for the apple trees to thrive.

### Final Answer:
The low temperature is required in apple for a duration of **800 hours**.