What is the general name of chemical substances which bring about control and coordination in plants?
The general name of the chemical substance, which bring about control and coordination of plants is called plant hormones or Phytohormones. Some examples are:
1. Auxins - Help in the growth of root & shoot tips.
2. Gibberellins - Help in vegetative growth.
3. Cytokinins - Promote cell division.
4. Abscisic acid - Inhibits growth & causes wilting (falling) of fruits and leaves.