Class 10 Science

Chapter 6 Solutions — Control and Coordination

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Solutions

Overview

Step-by-step NCERT solutions for Control and Coordination (Chapter 6, CBSE Class 10 Science) — the full working for every question, not just the final answer. You can also read the Control and Coordination textbook chapter.

Solved

What these solutions cover

All 26 questions in Control and Coordination are solved in the PDF. Here's what's inside, exercise by exercise:

Nervous System

What is the difference between a reflex action and walking?
What happens at the synapse between two neurons?
Which part of the brain maintains posture and equilibrium of the body?
How do we detect the smell of an agarbatti (incense stick)?

Coordination in Plants

What is the role of the brain in reflex action?
What are plant hormones?
How is the movement of leaves of the sensitive plant different from the movement of a shoot towards light?

Hormones in Animals

Give an example of a plant hormone that promotes growth.
How do auxins promote the growth of a tendril around a support?
Design an experiment to demonstrate hydrotropism.

Hormones in Animals — Feedback Mechanism

How does chemical coordination take place in animals?
Why is the use of iodised salt advisable?
How does our body respond when adrenaline is secreted into the blood?
Why are some patients of diabetes treated by giving injections of insulin?

End-of-Chapter Questions

1.
Which of the following is a plant hormone?
- (a) Insulin
- (b) Thyroxine
- (c) Oestrogen
- (d) Cytokinin
2.
The gap between two neurons is called a
- (a) dendrite
- (b) synapse
- (c) axon
- (d) impulse
3.
The brain is responsible for
- (a) thinking
- (b) regulating the heartbeat
- (c) balancing the body
- (d) all of the above
What is the function of receptors in our body? Think of situations where receptors do not work properly. What problems are likely to arise?
Draw the structure of a neuron and explain its function.
How does phototropism occur in plants?
Which signals will get disrupted in case of a spinal cord injury?
How does chemical coordination occur in plants?
What is the need for a system of control and coordination in an organism?
How are involuntary actions and reflex actions different from each other?
Compare and contrast nervous and hormonal mechanisms for control and coordination in animals.
What is the difference between the manner in which movement takes place in a sensitive plant and the movement in our legs?

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