Science · Textbook solutions

Control and Coordination

Every solved example, exercise, and miscellaneous question — in the order the textbook teaches them. · 26 questions

6.1 Animals — Nervous System

5 q

Practice · 5

IT 6.1 Q1 $What is the difference between a reflex action and walking?$
IT 6.1 Q2 $What happens at the synapse between two neurons?$
IT 6.1 Q3 $Which part of the brain maintains posture and equilibrium of the body?$
IT 6.1 Q4 $How do we detect the smell of an agarbatti (incense stick)?$
IT 6.1 Q5 $What is the role of the brain in reflex action?$

5 q

Practice · 5

IT 6.2 Q1 $What are plant hormones?$
IT 6.2 Q2 $How is the movement of leaves of the sensitive plant different from the movement of a shoot towards light?$
IT 6.2 Q3 $Give an example of a plant hormone that promotes growth.$
IT 6.2 Q4 $How do auxins promote the growth of a tendril around a support?$
IT 6.2 Q5 $Design an experiment to demonstrate hydrotropism.$

4 q

Practice · 4

IT 6.3 Q1 $How does chemical coordination take place in animals?$
IT 6.3 Q2 $Why is the use of iodised salt advisable?$
IT 6.3 Q3 $How does our body respond when adrenaline is secreted into the blood?$
IT 6.3 Q4 $Why are some patients of diabetes treated by giving injections of insulin?$

12 q

Ex 6 Q1 $Which of the following is a plant hormone?$
1. A. $Insulin$
2. B. $Thyroxin$
3. C. $Oestrogen$
4. D. $Cytokinin$
Ex 6 Q2 $The gap between two neurons is called a$
1. A. $dendrite$
2. B. $synapse$
3. C. $axon$
4. D. $impulse$
Ex 6 Q3 $The brain is responsible for$
1. A. $thinking$
2. B. $regulating the heart beat$
3. C. $balancing the body$
4. D. $all of the above$
Ex 6 Q4 $What is the function of receptors in our body? Think of situations where receptors do not work properly. What problems are likely to arise?$
Ex 6 Q5 $Draw the structure of a neuron and explain its function.$
Ex 6 Q6 $How does phototropism occur in plants?$
Ex 6 Q7 $Which signals will get disrupted in case of a spinal cord injury?$
Ex 6 Q8 $How does chemical coordination occur in plants?$
Ex 6 Q9 $What is the need for a system of control and coordination in an organism?$
Ex 6 Q10 $How are involuntary actions and reflex actions different from each other?$
Ex 6 Q11 $Compare and contrast nervous and hormonal mechanisms for control and coordination in animals.$
Ex 6 Q12 $What is the difference between the manner in which movement takes place in a sensitive plant and the movement in our legs?$