Class 10 Science - BIHAR
Control and Coordination
The chapter Control and Coordination in Class 10 Science explores how living organisms maintain homeostasis and respond to external and internal stimuli. For BSEB students, this chapter is crucial as it covers both plant movements (tropisms) and the complex human nervous and endocrine systems. You will learn about neurons, reflex arcs, the brain, hormones, and chemical coordination in plants. Mastering this chapter helps you score high in biology, as it frequently features in both objective and subjective questions in the Bihar Board matric examination.
Start Learning FreeKey Concepts
Nervous System
The network of nerve cells (neurons) that transmits electrical impulses rapidly across the body to coordinate actions.
Reflex Action and Reflex Arc
A sudden, involuntary response to a stimulus controlled by the spinal cord to protect the body from sudden harm.
Human Brain
The central processing organ divided into the forebrain (thinking), midbrain, and hindbrain (involuntary actions like heartbeat and posture).
Plant Hormones (Phytohormones)
Chemicals like auxin, gibberellin, cytokinin, and abscisic acid that regulate plant growth, development, and responses to stimuli.
Endocrine System
A system of ductless glands (like thyroid, adrenal, pancreas) that secrete hormones directly into the blood to regulate metabolism and growth.
Important Formulas
Board Exam Info
In the Bihar (BSEB) Class 10 Science board exam, this chapter typically carries around 5 to 8 marks. Questions usually include multiple-choice questions (MCQs) on plant hormones or brain parts, short-answer questions on reflex action, and long-answer questions detailing the human endocrine system or nervous system.
Frequently Asked Questions
What is the difference between a reflex action and walking?
A reflex action is a fast, involuntary response controlled by the spinal cord, whereas walking is a voluntary action controlled by the cerebrum of the brain.
Which plant hormone inhibits growth?
Abscisic acid (ABA) is the plant hormone responsible for inhibiting growth and causing wilting of leaves.
Why is the pituitary gland called the master gland?
It is called the master gland because it secretes hormones that control the functions of all other endocrine glands in the body.
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