Class 10 Science - ANDHRA-PRADESH
Control and Coordination
The chapter Control and Coordination in Class 10 Science explores how living organisms detect changes in their environment and respond to them effectively. For Andhra Pradesh (BSEAP) board exams, students will learn about the nervous system in humans, reflex actions, the brain, and hormonal coordination in both animals and plants (tropisms). Understanding these mechanisms helps explain how complex multi-cellular organisms maintain internal stability, known as homeostasis. This chapter is vital for scoring high marks in biology, as it frequently features conceptual diagram-based questions and application-oriented problems in the board examinations.
Start Learning FreeKey Concepts
Nervous System and Neurons
Neurons are the structural and functional units of the nervous system that transmit electrical impulses across the body, consisting of dendrites, a cell body, and an axon.
Reflex Arc
A rapid, automatic response to a stimulus that bypasses conscious thought, traveling through a pathway involving a receptor, sensory neuron, spinal cord, motor neuron, and effector.
Human Brain
The central processing organ divided into three main parts: the forebrain (thinking and voluntary actions), midbrain, and hindbrain (involuntary actions like breathing and heartbeat).
Plant Movements and Hormones
Plants respond to environmental stimuli through directional growth movements called tropisms (phototropism, geotropism) regulated by plant hormones like auxins, gibberellins, and cytokinins.
Endocrine System in Humans
A system of ductless glands (such as the pituitary, thyroid, adrenal, and pancreas) that secrete chemical messengers called hormones directly into the blood to regulate metabolism and growth.
Important Formulas
Board Exam Info
In the Andhra Pradesh (BSEAP) Class 10 Science board examination, this chapter typically carries around 4 to 6 marks. Questions frequently include 1-mark objective questions, 2-mark short answers (such as defining reflex arc or naming plant hormones), and 4-mark descriptive questions often accompanied by diagrams of the human brain, neuron, or reflex action.
Frequently Asked Questions
What is the difference between a reflex action and walking?
A reflex action is a fast, involuntary response controlled mainly by the spinal cord to protect the body from harm, whereas walking is a voluntary action controlled by the cerebrum of the brain.
Why is chemical coordination faster in some cases and slower in others?
Nerve impulses travel very fast through electrical wires (neurons), while hormones travel slowly through the bloodstream, making hormonal coordination slower but longer-lasting.
What is the role of auxin in plants?
Auxin is a plant hormone synthesized at the shoot tip that helps in cell elongation and causes plants to bend towards light (phototropism).
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