Q. Coordination in plants is by

Explanation by: Kirti

Plants do not have a nervous system like animals. Instead, they coordinate their functions through plant hormones (also called phytohormones). These hormones regulate growth, development, and responses to environmental stimuli.
Some key plant hormones include:
Auxins – Control cell elongation and phototropism.
Gibberellins – Promote stem elongation and seed germination.
Cytokinins – Promote cell division.
Abscisic Acid (ABA) – Helps in stress responses and stomatal closure.
Ethylene – Involved in fruit ripening.
Thus, hormones are responsible for coordination in plants.