Science
Control and Coordination
नियंत्रण एवं समन्वय
Class 10 Science Chapter “Control and Coordination” explains how living organisms regulate and coordinate body functions. It introduces the nervous system, neurons, reflex actions and reflex arcs, showing how quick responses are produced. The chapter also covers the endocrine system and hormones in animals, along with plant hormones and their role in growth, movement and responses to environmental changes.
1Nervous system
तंत्रिका तंत्र
In this Class 10 Science topic from Control and Coordination, students learn how the nervous system receives information, processes it, and produces suitable responses. The topic explains the role of neurons, sensory and motor nerves, the brain, spinal cord, and sense organs in coordinating body activities. Students also explore nerve impulses, reflex actions, and how reflex arcs enable quick responses, building a clear understanding of communication and coordination in the human body.
39 questionsReflex action
प्रतिवर्ती क्रिया
In Class 10 Science, the topic Reflex Action explains how the body responds rapidly and automatically to a stimulus, often before the brain can process it fully. Students learn the pathway of a reflex arc: receptors detect a change, sensory neurons carry the impulse to the spinal cord, relay neurons connect it to motor neurons, and effectors such as muscles produce the response. Examples like quickly withdrawing a hand from a hot object show how this protective mechanism works, while the brain later receives information about the action.
45 questionsEndocrine system
अंतःस्रावी तंत्र
In this Class 10 Science topic from the chapter Control and Coordination, students learn how the endocrine system regulates body functions through hormones. The topic introduces major glands such as the pituitary, thyroid, adrenal glands and pancreas, and explains how hormones influence growth, metabolism, stress responses and blood sugar control. Students also explore chemical coordination, the role of insulin and feedback mechanisms that help maintain balance within the body.
39 questionsPlant hormones
पादप हार्मोन
In this Class 10 Science topic from the chapter Control and Coordination, students learn how plants coordinate growth and respond to their surroundings without a nervous system. The topic introduces plant hormones such as auxin, gibberellin, cytokinin, abscisic acid and ethylene, explaining their roles in cell growth, seed germination, flowering, dormancy, fruit ripening and leaf fall. Students also connect these chemical signals with responses such as phototropism and geotropism, building a clear understanding of plant regulation and movement.
74 questions