Introduction

Plant growth regulators (also known as growth regulators or plant hormones) are chemicals used to alter the growth of a plant or plant part. Hormones are substances naturally produced by plants, substances that control normal plant functions, such as root growth, fruit set and drop, growth and other development processes. 

Pre-Requisites:

Growth rate

Activity:

Certain fertilizers and plant nutrients contain plant growth hormones

Real Life Question:

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Key Words / FlashCards

Learning aids / Gadgets

Real life uses :

Regulators are used to alter the plant growth rate for better produce and fast growth

Places to visit :

Garden, plant nursery

Practical examples around us

What you learn in Theory:

Plant growth regulators are hormone-like chemicals that occur naturally in plants, and play a central role in their growth and development. Five major classes of plant growth regulators have been identified as plant hormones, but scientists believe that there are more waiting to be discovered.

The five growth hormones include auxins, gibberellins, cytokinins, abscisic acid, and ethylene. Collectively, they regulate many facets of plant growth and development including seed germination, root growth, stem elongation, leaf expansion, flowering, seed development, fruit ripening, and dropping of leaves and fruits.

What you learn in Practice:

Plant growth regulators are hormones