Which of the following characters of pea plants chosen by Mendel had the contrasting traits of green and yellow?

Options

A. Flower colour
B. Pod colour
C. Seed colour
D. Both (b) and (c)

Answer

To solve the question regarding the contrasting traits of green and yellow in pea plants chosen by Mendel, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for the specific character of pea plants that had contrasting traits of green and yellow. We need to analyze the options provided.

2. **Analyzing Option 1 - Flower Color**:
- Mendel studied flower color in pea plants, but the contrasting traits were not green and yellow. Instead, they were purple and white.
- **Conclusion**: This option is incorrect.

3. **Analyzing Option 2 - Pod Color**:
- Mendel did observe pod color in pea plants, and the contrasting traits for pod color were indeed green and yellow.
- **Conclusion**: This option is correct.

4. **Analyzing Option 3 - Seed Color**:
- Mendel also studied seed color in pea plants, and the contrasting traits for seed color were green and yellow as well.
- **Conclusion**: This option is also correct.

5. **Analyzing Option 4 - Both B and C**:
- Since both pod color (Option 2) and seed color (Option 3) have the contrasting traits of green and yellow, this option is correct as well.
- **Conclusion**: This option is correct.

6. **Final Answer**: Therefore, the correct answer to the question is Option 4, which states that both pod color and seed color had the contrasting traits of green and yellow.