Haploid plants can be obtained by culturing
Young leaves
Endosperm
Pollen grains
Root tips

Options

A. Young leaves
B. Endosperm
C. Pollen grains
D. Root tips

Answer

To determine which option can be used to obtain haploid plants, we need to analyze each option based on their chromosomal composition and the method of tissue culture.

### Step-by-Step Solution:

1. **Understanding Haploid Plants**:
- Haploid plants are those that have only one set of chromosomes (n). These plants can be produced through tissue culture techniques.

2. **Analyzing the Options**:
- **Young Leaves**:
- Young leaves are typically diploid (2n), meaning they have two sets of chromosomes. Therefore, they cannot be used to obtain haploid plants.
- **Endosperm**:
- Endosperm is usually triploid (3n), which means it has three sets of chromosomes. This also disqualifies it from being a source for haploid plants.
- **Pollen Grains**:
- Pollen grains are haploid (n), containing only one set of chromosomes. This makes them a suitable candidate for producing haploid plants.
- **Root Tips**:
- Root tips are generally diploid (2n) as well, similar to young leaves, and thus cannot be used to obtain haploid plants.

3. **Conclusion**:
- Among the given options, only pollen grains are haploid and can be used to obtain haploid plants through tissue culture.

### Final Answer:
The correct option is **C) Pollen grains**.

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