Class 10 Science - UP
Control and Coordination
The chapter Control and Coordination in Class 10 Science explores how living organisms maintain homeostasis and respond to external stimuli. For students following the Uttar Pradesh (UPMSP) curriculum, this chapter is crucial as it forms the basis of human physiology and plant biology. You will study the nervous system, reflex actions, human brain structure, and endocrine glands with their respective hormones. In plants, the focus is on tropic movements and phytohormones. This chapter carries significant weightage in board exams, frequently featuring diagram-based questions on the human brain, neuron, and reflex arc, along with direct conceptual queries.
Start Learning FreeKey Concepts
Nervous System and Neuron
Neurons are the structural and functional units of the nervous system that transmit electrical impulses across the body through dendrites, cell body, and axon.
Reflex Action and Reflex Arc
A reflex action is a sudden, involuntary response to a stimulus to protect the body from harm, managed primarily by the spinal cord through a pathway called a reflex arc.
Human Brain
The human brain is the central processing unit divided into the forebrain (thinking and voluntary actions), midbrain, and hindbrain (controlling involuntary actions like heartbeat and posture).
Chemical Coordination in Animals (Hormones)
Endocrine glands secrete specific chemical messengers called hormones directly into the blood, regulating growth, metabolism, and development (e.g., insulin, adrenaline, thyroxine).
Coordination in Plants
Plants respond to stimuli using directional movements called tropisms (phototropism, geotropism) mediated by plant hormones or phytohormones like auxin, gibberellin, and cytokinin.
Important Formulas
Board Exam Info
In the Uttar Pradesh (UPMSP) Class 10 Science board examination, 'Control and Coordination' typically carries around 5 to 7 marks. Questions frequently include multiple-choice questions (MCQs), short-answer questions about hormone functions or plant movements, and long-answer or diagram-based questions requiring the labeling of the human brain, neuron, or reflex arc.
Frequently Asked Questions
What is the difference between a reflex action and walking?
A reflex action is an involuntary, rapid response controlled by the spinal cord without conscious thought. Walking is a voluntary action coordinated by the cerebrum and cerebellum of the brain.
Why is the pituitary gland called the master gland?
The pituitary gland is called the master gland because it secretes hormones that regulate and control the functions of all other endocrine glands in the body.
How do plant hormones differ from animal hormones?
Plant hormones (phytohormones) diffuse slowly through plant tissues to regulate growth and directional movements, whereas animal hormones are secreted by specific endocrine glands and transported rapidly via the blood circulatory system.
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