Give four physiological functions of cytokinins.

Explanation

### Step-by-Step Solution:

1. **Definition of Cytokinins**:
- Cytokinins are a class of plant hormones that play a crucial role in regulating various physiological processes in plants. They are primarily involved in promoting cell division and growth.

2. **First Physiological Function - Induction of Cell Division**:
- One of the major physiological functions of cytokinins is to induce cell division (cytokinesis) in plant tissues. This is essential for growth and development, as it allows for the formation of new cells.

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