Question

write a brief account of phytohormones.​

Answer 1

Answer:

Plant hormones (also known as phytohormones) are signal molecules, produced within plants, that occur in extremely low concentrations. ... Phytohormones occur across the plant kingdom, and even in algae, where they have similar functions to those seen in higher plants.

Answer 2

Short Note About Phytohormones :

Plant hormones or Phytohormones may be defined as an "an organic substance produced naturally in plants which control growth and other physiological functions at a site away from its place of synthesis". Thimann (1948) proposed the term phytohormones. As these hormones are synthesis by plants, they are also called phytohormones.

Phytohormones are active in small concentrations. They are capable of influencing physiological activities leading promotion, inhibition and modification of growth. These growth regulatory substances are generally grouped under five major classes, namely

1. Auxins,
2. Gibbellins,
3. Cytokinins,
4. Ethylene and
5. Abscisic acid

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