Control and Coordination is the process by which living organisms respond to stimuli and maintain body balance.
In Animals:
- Nervous system (brain, spinal cord, nerves) controls quick actions.
- Endocrine system (hormones) controls slow, long-lasting changes.
- Neurons carry messages as electrical signals.
- Example: Moving hand away from hot object (reflex action).
In Plants:
- Use hormones (phytohormones) to respond to light, gravity, touch, etc.
- Example: Plant bends towards light due to auxin (phototropism).
Practice Questions PDF
Download a printable worksheet on Control and Coordination with answers.
Questions on Control and Coordination
Showing 241–256 of 256241.The brain is responsible for (a) thinking. (b) regulating the heart beat. (c) balancing the body. (d) all of the above. 242.The gap between two neurons is called a (a) dendrite. (b) synapse. (c) axon. (d) impulse 243.Which of the following is a plant hormone? (a) Insulin (b) Thyroxin (c) Oestrogen (d) Cytokinin. 244.Why are some patients of diabetes treated by giving injections of insulin? 245.How does our body respond when adrenaline is secreted into the blood? 246.Why is the use of iodised salt advisable? 247.How does chemical coordination take place in animals? 248.How do auxins promote the growth of a tendril around a support? 249.Give an example of a plant hormone that promotes growth. 250.How is the movement of leaves of the sensitive plant different from the movement of a shoot towards light? 251.What are plant hormones? 252.What is the role of the brain in reflex action? 253.How do we detect the smell of an agarbatti (incense stick)? 254.Which part of the brain maintains posture and equilibrium of the body? 255.What happens at the synapse between two neurons? 256.What is the difference between a reflex action and walking?