Where are the following hormones synthesised in plants?
(a)IAA ,(b) Gibberellins,(c Cytokinins

Explanation

To answer the question regarding where the following hormones are synthesized in plants, we can break it down into three parts:

### Step-by-Step Solution:

1. **Indole Acetic Acid (IAA)**:
- IAA is a type of auxin, which is a plant hormone.
- It is primarily synthesized in the **growing apices** of the plant, which includes the **shoot tips**, **leaf primordia**, and **developing seeds**.

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