Class 10 Science - WEST-BENGAL
Control and Coordination
The chapter Control and Coordination in Class 10 Science under the WBBSE syllabus explores how living organisms detect changes in their environment and respond to them. You will learn about the nervous system and hormonal regulation in animals, focusing on the human brain, spinal cord, reflex actions, and endocrine glands. Additionally, the chapter covers plant movements such as tropisms and plant hormones (phytohormones) like auxin and gibberellin. This is a high-scoring and vital chapter for your board exams, frequently featuring direct conceptual questions, diagram-based questions on the human brain or neuron, and differentiation between nervous and hormonal control.
Start Learning FreeKey Concepts
Nervous System & Neuron
The structural and functional unit of the nervous system is the neuron, which transmits electrical impulses to coordinate body actions quickly.
Reflex Action
An automatic, rapid, and involuntary response to a stimulus controlled mainly by the spinal cord to protect the body from sudden harm.
Human Brain
The central processing organ divided into the cerebrum, cerebellum, and medulla oblongata, each controlling specific voluntary and involuntary functions.
Plant Hormones (Phytohormones)
Chemical messengers like auxin, gibberellin, cytokinin, and abscisic acid that regulate plant growth, development, and responses to stimuli.
Tropism in Plants
Directional growth movements of plants in response to external stimuli like light (phototropism), gravity (geotropism), and water (hydrotropism).
Endocrine System in Humans
Ductless glands like the pituitary, thyroid, adrenal, and pancreas that secrete hormones directly into the blood to regulate long-term metabolic activities.
Important Formulas
Board Exam Info
In the West Bengal Board (WBBSE) Class 10 Life Science examination, this chapter typically carries around 6 to 9 marks. Questions usually include Multiple Choice Questions (MCQs), Very Short Answer (VSA) questions, 2-3 mark short notes on reflex arcs or plant hormones, and 5-bit descriptive questions involving diagrams of a neuron or the human brain.
Frequently Asked Questions
What is the difference between voluntary and involuntary actions?
Voluntary actions are consciously controlled by the cerebrum (like writing or walking), whereas involuntary actions happen automatically without conscious thought and are controlled by the medulla and spinal cord (like heartbeat or digestion).
Why is the pituitary gland called the master gland?
The pituitary gland secretes hormones that control the functions of almost all other endocrine glands in the body, which is why it is known as the master gland.
What is a reflex arc?
A reflex arc is the pathway taken by nerve impulses in a reflex action, running from the sensory receptor through the spinal cord to the motor effector organ.
Learn Control and Coordination with Your AI Tutor
10 different ways to study this chapter. Free for 3 chapters per day.
Lecture
Key Points
Interactive
Quiz
Flashcards