Cytokinins help to produce all except

Options

A. new leaves
B. chloroplast in leaves
C. lateral shoot growth and adventitious shoot formation
D. rooting on cut stem.

Explanation

To answer the question "Cytokinins help to produce all except," we need to analyze the functions of cytokinins and identify which option does not fall under their role.

### Step-by-step Solution:

1. **Understand Cytokinins**: Cytokinins are a class of plant hormones that play a crucial role in promoting cell division and growth in plants.

2. **Identify Functions of Cytokinins**:
- **New Leaves Formation**: Cytokinins are involved in the formation of new leaves.
- **Chloroplast Formation**: They help in the development of chloroplasts in leaves, which are essential for photosynthesis.
- **Lateral Shoot Growth**: Cytokinins promote the growth of lateral shoots, contributing to the overall branching of the plant.
- **Adventitious Shoot Formation**: They also aid in the formation of adventitious shoots, which can arise from non-apical tissues.

3. **Examine the Options**: The question provides several options regarding what cytokinins help produce. We need to identify which one is not associated with cytokinins.

4. **Rooting on Cut Stem**: The option that states "rooting on the cut stem" is not a function of cytokinins. Instead, this process is primarily regulated by another plant hormone called auxin.

5. **Conclusion**: Based on the analysis, the only option that cytokinins do not help produce is "rooting on the cut stem."

### Final Answer:
Cytokinins help to produce all except **rooting on the cut stem**.

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