Plant hormones are also known as phytohormones.
In general, plants need carbon dioxide, sunlight and water for healthy growth. Their development depends on these basic facts the most.
These factors itself are known as plant hormones.
Biologically, plant hormones are present at a very low concentration in the plants, though these hormones are generated in all parts of the plant and are also transmitted to different parts.
These hormones make plant act synergistically or individually.
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