Coordination and control are essential for living organisms to function smoothly and respond to changes in their environment. Organisms maintain balance through two main types of coordination:
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Nervous coordination: Uses electrical impulses for fast responses.
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Chemical coordination: Uses hormones for slower but long-lasting effects.
In humans, the nervous system (central and peripheral) transmits signals, while receptors (eyes, ears, skin, taste buds, etc.) detect stimuli like touch, temperature, and taste. The endocrine system regulates growth, reproduction, blood glucose, and water balance through chemical messengers.
The chapter also covers nervous system disorders such as vascular disorders (e.g., paralysis) and functional disorders (e.g., epilepsy). These notes include MCQs, short questions, and long questions for quick and effective exam preparation.
Important MCQs – Chapter 12 Coordination and Control
1. Which type of coordination is found in both animals and plants?
(a) Nervous coordination
(b) Reflex coordination
(c) Hormonal coordination ✅
(d) Voluntary coordination
2. The nervous system in human sconsists of:
(a) Brain and spinal cord only
(b) Cranial and spinal nerves only
(c) Central and peripheral nervous system ✅
(d) Forebrain and hindbrain
3. The unit of the nervous system is called:
(a) Nerve
(b) Braincell
(c) Neuron ✅
(d) Dendrite
4. Which type of neuron carries impulses from receptors to CNS?
(a) Motor neuron
(b) Interneuron
(c) Sensory neuron ✅
(d) Mixed neuron
5. Which part of the brain links the nervous system and endocrine system?
(a) Thalamus
(b) Hypothalamus ✅
(c) Pons
(d) Midbrain
47. Somatotrophin is also known as:
(a) Insulin
(b) Growth hormone ✅
(c) Adrenaline
(d) Estrogen
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