which is not correctly matched ?

Options

A. Explant-Excised plant part used for callus formation
B. Cytokinins - Root initiation in callus
C. Somatic embryos- Embryos produced by vegetative cells
D. Anther culture-Haploid plants

Answer

To determine which option is not correctly matched, we will analyze each option provided in the question regarding plant tissue culture and the roles of different plant hormones and processes.

### Step-by-Step Solution:

1. **Analyze the First Option: Explant excise plant part used for callus formation.**
- **Explanation:** An explant is indeed a small piece of plant tissue that is excised (cut out) and used in tissue culture to generate callus. Callus is an undifferentiated mass of cells that can develop into a new plant.
- **Match Status:** Correctly matched.

2. **Analyze the Second Option: Cytokinins root initiation in callus.**
- **Explanation:** Cytokinins are plant hormones that promote cell division and shoot formation. They do not primarily induce root initiation; rather, auxins are responsible for promoting root development.
- **Match Status:** Not correctly matched.

3. **Analyze the Third Option: Somatic embryos produced by vegetative cells.**
- **Explanation:** Somatic embryos can indeed be produced from vegetative cells through processes such as somatic embryogenesis, where somatic cells (non-reproductive cells) undergo differentiation to form embryos.
- **Match Status:** Correctly matched.

4. **Analyze the Fourth Option: Anther culture produces haploid plants.**
- **Explanation:** Anther culture is a technique used to produce haploid plants. Anthers contain pollen grains, which are haploid, and can be induced to develop into plants.
- **Match Status:** Correctly matched.

### Conclusion:
The option that is **not correctly matched** is **"Cytokinins root initiation in callus."**

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