Plant hormones are known as _________

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the term used to refer to plant hormones.

2. **Identifying the Term**: Plant hormones are specifically known as "phytohormones". This term is derived from "phyto", meaning plant, and "hormone", which refers to the chemical substances that regulate various functions in the plant.

3. **Explaining the Function**: Phytohormones play a crucial role in regulating plant growth and development. They are often referred to as growth regulators because they influence processes such as cell division, elongation, and differentiation.

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