Biology · Textbook solutions

Control and Coordination

Every solved example, exercise, and miscellaneous question, in the order the textbook teaches them. Plus every board question asked from this chapter. · 52 questions

Exercise

52 q

Q1. Multiple choice questions

Practice · 12

Multiple choice questions.
Ex Q1(1) $The nervous system of mammals uses both electrical and chemical means to send signals via neurons. Which part of the neuron receives impulse?$
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Ex Q1(2) $___________ is a neurotransmitter.$
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Ex Q1(3) $The supporting cells that produce myelin sheath in the PNS are _________.$
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Ex Q1(4) $A collection of neuron cell bodies located outside the CNS is called _________.$
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Ex Q1(5) $Receptors for protein hormones are located$
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Ex Q1(6) $If parathyroid glands of a man are removed, the specific result will be ------$
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Ex Q1(7) $Hormone thyroxine, adrenaline and nor-adrenaline are formed from ----------$
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Ex Q1(8) $Pheromones are chemical messengers produced by animals and released outside the body. The odour of these substance affects$
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Ex Q1(9) $Which one of the following is a set of discrete endocrine glands?$
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Ex Q1(10) $After ovulation, Graafian follicle changes into$
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Ex Q1(11) $Which one of the following pair correctly matches a hormone with a disease resulting from its deficiency?$
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Ex Q1(12) $___________ is in direct contact of brain in human.$
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Q2. Very very short answer questions

Practice · 10

Very very short answer questions.
Ex Q2(1) $What is the function of red nucleus?$
Ex Q2(2) $What is the importance of corpora quadrigemina?$
Ex Q2(3) $What does the cerebellum of brain control?$
Ex Q2(4) $Name the three ear ossicles.$
Ex Q2(5) $Name the anti abortion hormone.$
Ex Q2(6) $Name an organ which acts as temporary endocrine gland.$
Ex Q2(7) $Name the type of hormones which bind to the DNA and alter the gene expression.$
Ex Q2(8) $What is the cause of abnormal elongation of long bones of arms and legs and of lower jaw.$
Ex Q2(9) $Name the hormone secreted by the pineal gland.$
Ex Q2(10) $Which endocrine gland plays important, role in improving immunity?$

Q3. Match the organism with the type of nervous system found...

Practice · 1

Ex Q3 $Match the organism with the type of nervous system found in them. Type of nervous system Organism 1. Neurons a. Earthworm 2. Ladder type b. Hydra 3. Ganglion c. Flatworm 4. Nerve net d. Human$

Type of nervous system	Organism
1. Neurons	a. Earthworm
2. Ladder type	b. Hydra
3. Ganglion	c. Flatworm
4. Nerve net	d. Human

Q4. Very short answer questions

Practice · 3

Very short answer questions.
Ex Q4(1) $Describe the endocrine role of islets of Langerhans.$
Ex Q4(2) $Mention the function of testosterone?$
Ex Q4(3) $Give symptoms of the disease caused by hyposecretion of ADH.$

Q5. Short answer questions

Practice · 13

Short answer questions
Ex Q5(1) $Rakesh got hurt on his head when he fell down from his motorbike. Which inner membranes must have protected his brain? What other roles do they have to play?$
Ex Q5(2) $Give reason - Injury to medulla oblongata may prove fatal.$
Ex Q5(3) $Distinguish between the sympathetic and parasympathetic nervous system on the basis of the effect they have on: a. Heart beat b. Urinary Bladder$
Ex Q5(4) $While holding a tea cup Mr. Kothari’s hands rattle. Which disorder he may be suffering from and what is the reason for this?$
Ex Q5(5) $List the properties of the nerve fibres.$
Ex Q5(6) $How does the tongue detect the sensation of taste?$
Ex Q5(7) $State the site of production and function of Secretin, Gastrin and Cholecystokinin.$
Ex Q5(8) $An adult patient suffers from low heart rate, low metabolic rate and low body temperature. He also lacks alertness, intelligence and initiative. What can be this disease? What can be its cause and care?$
Ex Q5(9) $Where is the pituitary gland located? Enlist the hormones secreted by anterior pituitary.$
Ex Q5(10) $Explain how the adrenal medulla and sympathetic nervous system function as a closely integrated system.$
Ex Q5(11) $Name the secretion of alpha, beta and delta cells of islets of langerhans. Explain their role.$
Ex Q5(12) $What are the two types of goitre? Mention their causes.$
Ex Q5(13) $Name the ovarian hormones and give their functions.$

Q6. Answer the following

Practice · 1

Answer the following.

Ex Q6(1)

Complete the table. Location Cell Type Function PNS .................. Produce myelin sheath PNS Satellite cells .................. .............. Oligodendrocytes Form myelin sheath around central axon CNS .................. Phagocytose pathogens CNS .................. Form the epithelial lining of brain cavities and central canal.

Location	Cell Type	Function
PNS	..................	Produce myelin sheath
PNS	Satellite cells	..................
..............	Oligodendrocytes	Form myelin sheath around central axon
CNS	..................	Phagocytose pathogens
CNS	..................	Form the epithelial lining of brain cavities and central canal.

Q7. Long answer questions

Practice · 12

Long answer questions.
Ex Q7(1) $Explain the process of conduction of nerve impulses upto development of action potential.$
Ex Q7(2) $Draw the neat labelled diagrams of : a. Human ear b. Sectional view of human eye c. L. S. of human brain d. Multipolar Neuron$
Ex Q7(3) $Answer the questions after observing the diagram given below. a. What do the synaptic vesicles contain? b. What process is used to release the neurotransmitter? c. What should be conditions for the next impulse to be conducted? d. Will the impulse be carried by post-synaptic membrane even if one pre-synaptic neuron is there? e. Can you name the channel responsible for their transmission?$
Ex Q7(4) $Explain the Reflex Pathway with the help of a neat labelled diagram.$
Ex Q7(5) $Krishna was going to school and on the way he saw a major bus accident. His heart beats increased and his hands and feet became cold. Name the part of the nervous system that had a role to play in this reaction.$
Ex Q7(6) $What will be the effect of thyroid gland atrophy on the human body?$
Ex Q7(7) $Write the names of hormones and the glands secreting them for the regulation of following functions. a. Growth of thyroid and secretion of thyroxine. b. Helps in relaxing pubic ligaments to facilitate easy birth of young ones. c. Stimulate intestinal glands to secrete interstinal juice. d. Controls calcium level in the blood e. Controls tubular absorption of water in kidneys. f. Urinary elimination of water. g. Sodium and potassium ion metabolism. h. Basal Metabolic rate. i. Uterine contraction. j. Heart beat and blood pressure. k. Secretion of growth hormone. l. Maturation of Graafian follicle.$
Ex Q7(8) $Explain the role of hypothalamus and pituitary as a coordinated unit in maintaining homeostasis?$
Ex Q7(9) $What is adenohypophysis? Name the homones secreted by it?$
Ex Q7(10) $Describe in brief, an account of disorders of adrenal gland.$
Ex Q7(11) $Explain action of steroid hormones and proteinous hormones.$
Ex Q7(12) $Describe in brief an account of disorders of the thyroid.$

What the board has asked from this chapter

Questions per paper · 5 papers · 2024 to 2026

June 2026

5 q

Q. 1(vii) $Weight loss, increased BMR and protruding eyeballs are the characteristics of _______.$
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Endocrine System
Q. 2(v) $Which part of human brain is responsible for maintaining body balance?$
Human Nervous System
Q. 13 $Enlist the names of VI, VII, VIII and IX cranial nerves.$
Human Nervous System
Q. 20 $(a) Write a note on meninges of central nervous system in human being. (b) Give functions of cerebrospinal fluid.$
Human Nervous System
Q. 29 $Give an account of different functional areas of cerebrum.$
Human Nervous System

February 2026

4 q

Q. 5 $Explain the properties of nerve fibre with reference to : (a) Irritability (b) Conductivity$
Synapse
Q. 13 $Write briefly on Alzheimer’s disease.$
Disorders of Nervous System
Q. 21 $\alpha$
Endocrine System
Q. 29 $Write the name of disorders caused due to hypo and hyper secretion of adrenal corticoids. Mention any 3 symptoms of each of these disorders.$
Endocrine System

July 2025

5 q

Q. 1(ii) $Which of the following is NOT a sensory nerve?$
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Human Nervous System
Q. 2(vi) $Name the disorder in which deficiency of ADH leads to reduced water reabsorption and increase in urine output.$
Endocrine System
Q. 13 $Give any two functions of Medulla oblongata.$
Human Nervous System
Q. 17 $(a) Which part of CNS produces CSF? (b) Give any four functions of CSF.$
Human Nervous System
Q. 31 $Name any four hormones secreted by adenohypophysis and give their significance.$
Endocrine System

July 2024

5 q

Q. 1(viii) $Degeneration of dopamine producing neurons in the CNS causes ______ .$
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Disorders of Nervous System
Q. 2(vi) $Which endocrine gland plays an important role in the development of immune system?$
Endocrine System
Q. 11 $Give location of corpus callosum and arbor vitae of human brain.$
Human Nervous System
Q. 18 $What is reflex action? Explain with one example each of the types of reflex actions based on previous experiences.$
Human Nervous System
Q. 28 $(a) Define Hormone. (b) Enlist any two properties of hormones. (c) Give diagrammatic representation of mode of hormone action through membrane bound receptors.$
Endocrine System

March 2024

5 q

Q. 2(iii) $Give the name of endocrine gland which is prominent at birth but gets gradually atrophied in adult stage.$
Endocrine System
Q. 2(vi) $Which cells of islets of Langerhans produce a hormone insulin?$
Endocrine System
Q. 18 $Name and describe hormones secreted by ovaries.$
Endocrine System
Q. 24 $Give the name and type of I, IV and VII cranial nerves.$
Human Nervous System
Q. 29 $Describe nervous system in planaria with well labelled diagram.$
Nervous System in Planaria

Control and Coordination

Exercise

Q1. Multiple choice questions

Q2. Very very short answer questions

Q3. Match the organism with the type of nervous system found...

Q4. Very short answer questions

Q5. Short answer questions

Q6. Answer the following

Q7. Long answer questions

What the board has asked from this chapter

June 2026

February 2026

July 2025

July 2024

March 2024

The 10 board questions to practise first

Question 1

Question 2

Question 3

Question 4

Question 5

Question 6

Question 7

Question 8

Question 9

Question 10