The chapter Control and Coordination in Class 10 Science explains how living organisms respond to internal and external stimuli through a well-organized system. In plants, coordination is achieved by hormones like auxins, gibberellins, cytokinins, abscisic acid, and ethylene, which regulate growth and responses such as phototropism and geotropism. Animals, on the other hand, rely on the nervous system and endocrine system for coordination.
The nervous system consists of neurons, the brain, spinal cord, and sense organs, which help transmit impulses and coordinate voluntary as well as reflex actions. The endocrine system controls long-term processes using hormones secreted by glands such as the pituitary, thyroid, pancreas, and adrenal glands. Together, these systems maintain balance in the body, ensuring survival and adaptation. This chapter is essential for understanding how organisms sense changes, make decisions, and respond effectively, which is a key concept for Class 10 board exams.
