Briefly explain chemical coordination in plants?

Chemical coordination in plants refers to how plant hormones—known as phytohormones—control growth, development, and reactions to factors like light and gravity. These hormones are produced in small quantities in one part of the plant and move to other parts, where they influence cell activities such as bending toward light or ripening fruits.

• Hormones: Organic chemical messengers that help different parts of the plant communicate and coordinate functions.
• Mechanism: Hormones are made in specific regions of the plant and then travel, usually by diffusion, to other areas where they perform their roles.

Examples of Functions:

• Growth: Auxins help cells divide and grow longer, while gibberellins support stem growth, seed germination, and flowering.
• Movement: Auxins make cells on the shaded side of a shoot grow faster, causing the plant to bend toward the light (phototropism).
• Development: Cytokinins trigger cell division; ethylene speeds up fruit ripening; and abscisic acid causes leaves to fall under stress conditions.