The character which can express only in homozygous condition in case of garden pea is-
(A) Constricted pod (B) Green seed colour
(C) Axial flower (D) Yellow pod

Options

A. A, B & D
B. A, C & D
C. B, C & D
D. A, B & C

Answer

To solve the question regarding which character can express only in a homozygous condition in the case of garden pea, we need to analyze the options provided based on Mendelian genetics.

### Step-by-Step Solution:

1. **Understanding Homozygous Condition**:
- A character that expresses only in homozygous condition is typically a recessive trait. This means that for the trait to be expressed, the organism must have two identical alleles (e.g., aa).

2. **Analyzing the Options**:
- **(A) Constricted pod**:
- This is a recessive trait. The dominant trait is the full pod. Therefore, constricted pod can only express in a homozygous condition (aa).

- **(B) Green seed color**:
- Green seed color is also a recessive trait. The dominant trait is yellow seed color. Thus, green seed color can only express in a homozygous condition (bb).

- **(C) Axial flower**:
- Axial flower is a dominant trait. It can express in both homozygous (AA) and heterozygous (Aa) conditions. Therefore, this option does not qualify.

- **(D) Yellow pod**:
- Yellow pod is a recessive trait. The dominant trait is green pod. Thus, yellow pod can only express in a homozygous condition (cc).

3. **Identifying the Correct Answer**:
- From the analysis, options (A), (B), and (D) are all recessive traits that can express only in homozygous conditions. However, the question asks for a single character that expresses only in homozygous condition.

4. **Conclusion**:
- Since the question asks for a character that can express only in homozygous condition, we can conclude that **Constricted pod (A)** is a clear example of a trait that expresses only in homozygous condition.

### Final Answer:
The character which can express only in homozygous condition in case of garden pea is **(A) Constricted pod**.