How does chemical coordination occur in plants?

Question

please give the details also

Answer 1

Plant hormones and growth regulators are chemicals that affect flowering; aging; root growth; distortion and killing of leaves, stems, and other parts; prevention or promotion of stem elongation; color enhancement of fruit; prevention of leafing and/or leaf fall; and many other conditions.

  

Gibberellic acid (GA) Stimulates cell division and elongation, breaks dormancy, speeds germination.

Ethylene gas (CH2) Ripening agent; stimulates leaf and fruit abscission.

Indoleacetic acid (IAA) Stimulates apical dominance, rooting, and leaf abscission.

Auxin causes several responses in plants:

Bending toward a light source (phototropism)

Downward root growth in response to gravity (geotropism)

Promotion of apical dominance

Flower formation

Fruit set and growth

Formation of adventitious roots