Class 10 Science - ODISHA
Control and Coordination
The chapter Control and Coordination in Class 10 Science for BSE Odisha explores how living organisms detect changes in their environment and respond to them effectively. Students learn about the nervous system, brain structure, reflex actions, and chemical coordination through hormones in both animals and plants (tropisms). This chapter is crucial for board exams as it consistently features conceptual questions, diagram-based questions on the human brain and neuron, and differentiation questions between nervous and hormonal control, carrying a significant weightage in the final examination.
Start Learning FreeKey Concepts
Nervous System and Neurons
The structural and functional unit of the nervous system is the neuron, which transmits electrical impulses across the body to coordinate rapid responses.
Reflex Action
A sudden, involuntary, and automatic response to a stimulus controlled by the spinal cord to protect the body from immediate harm.
Human Brain
The central processing unit of the body divided into three main regions: forebrain (thinking), midbrain (involuntary actions), and hindbrain (posture and balance).
Plant Hormones (Phytohormones)
Chemical substances like auxins, gibberellins, cytokinins, and abscisic acid that regulate plant growth, development, and directional movements called tropisms.
Endocrine System in Animals
A system of ductless glands like the thyroid, adrenal, and pancreas that secrete hormones directly into the blood to regulate long-term metabolic activities.
Important Formulas
Board Exam Info
In the BSE Odisha Class 10 Science board examination, this chapter typically carries around 6 to 8 marks. Questions frequently include objective-type questions, short answer questions on plant hormones, and structured diagram-based questions requiring the labeling of a neuron or the human brain.
Frequently Asked Questions
What is the difference between reflex action and walking?
Reflex action is an involuntary, rapid response controlled mainly by the spinal cord, whereas walking is a voluntary action controlled by the cerebrum in the brain.
Why is chemical coordination slower than nervous coordination?
Nervous coordination uses electrical impulses along nerve fibers which travel almost instantaneously, whereas chemical coordination relies on hormones transported through the bloodstream, taking more time to reach target organs.
What is the role of insulin in our body?
Insulin is a hormone produced by the pancreas that helps regulate blood sugar (glucose) levels by converting excess glucose into glycogen.
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