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Selina solutions for Class 10 Biology chapter 8 - The Nervous System

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Selina Selina ICSE Concise Biology Class 10

Selina ICSE Concise Biology for Class 10

Chapter 8: The Nervous System

Chapter 8: The Nervous System solutions [Page 0]

MULTIPLE CHOICE TYPE
(Select the most appropriate option).

The insulating sheath covering the neural axon is called.
(a) plasmalemma (b) neurolemma
(c) dura mater (d) pia mater

MULTIPLE CHOICE TYPE
(Select the most appropriate option).

Which one of the following pairs of brain part and its function is not correctly matched?
(a) Cerebrum – Memory
(b) Cerebellum - Balance of body
(c) Medulla oblongata – controls activites of internal organs
(d) Pons - Consciousness

 

MULTIPLE CHOICE TYPE
(Select the most appropriate option).

A mixed nerve is one which
(a) carries sensations from 2 or more different sense organs
(b) contains both sensory and motor fibres
(c) has a common root but braches into two or more nerves to different organs
(d) has two or more roots from different parts of brain.

Chapter 8: The Nervous System solutions [Page 0]

Name the following:

The fluid that is present inside and outside the brain.

Name the following:

The junction between two nerve cells

Name the following:

The part of the brain which is concerned with memory

Name the following:

The part of the human brain which controls body temperature.

Note the relationship between the first two words and suggest the suitable word/words for the fourth place.

Stimulus: Receptor:: Impulse: …………….

Note the relationship between the first two words and suggest the suitable word/words for the fourth place.

Cerebrum: Diencephalon:: Cerebellum: ……………….

Note the relationship between the first two words and suggest the suitable word/words for the fourth place.

Receptor: Sensory nerve:: Motor nerve: ……………….

Complete the following statement by choosing the correct alternative from the choice given in bracker:

The dorsal root ganglion of the spinal cord contains cell bodies of (motor/sensory/intermediate) neurons.

Complete the following statement by choosing the correct alternative from the choice given in bracker:

Cerebellum is the part of the brain which is responsible for
(i) conducting reflexes in the bosy
(ii) maintain posture and equilibrium
(iii) controlling thinking memory & reasoning

 

Complete the following statement by choosing the correct alternative from the choice given in bracker:

Reflex action is controlled by
(i) brain (ii) spinal cord
(iii) autonomic (iii) peripheral nervous system

Chapter 8: The Nervous System solutions [Page 0]

Mention where in human bosy is the following located and state their main function:
corpus callosum

Mention where in human bosy is the following located and state their main function:

central canal

State whether the following statement is true (T) or false (F).

The main component of the white matter of the brain is perikaryon

State whether the following statement is true (T) or false (F).

The arachnoid layer fits closely inside the pia mater.

State whether the following statement is true (T) or false (F).

A double chain of ganglia, one on each side of the nerve cord belongs to the spinal cord.

State whether the following statement is true (T) or false (F).

Dura mater is the outermost layer of the meninges.

Differentiate between following pair with reference to the aspect in bracket.

cerebrum and cerebellum (function)

Differentiate between following pair with reference to the aspect in bracket.

sympathetic nervous system and para – sympathetic nervous system (overall effect on body)

Differentiate between following pair with reference to the aspect in bracket.

Sensory nerve and motor nerve (direction of impulse carried)

Differentiate between following pair with reference to the aspect in bracket.

medulla oblongata & cerebellum (function)

Differentiate between following pair with reference to the aspect in bracket.

cerebrum and spinal cord (arrangement of cytons and exons of neurons).

Given below is a structure, write its special functional activity.

Given below are two structures, write their special functional activity.

Given below is a structure, write its special functional activity.

Myelin sheath and ……………

Write the function of synapse.

Write the function of Association neuron.

Write the function of medullary sheath.

Write the function of Medulla obiongata.

Write the function of cerebellum.

Write the function of Cerebrospinal fluid.

what do we refer to in the nervous system when we say:

sensory, motor and mixed ………………..

what do we refer to in the nervous system when we say:

somatic and autonomic …………………..

what do we refer to in the nervous system when we say:

Natural and conditioned …………………

what do we refer to in the nervous system when we say:

sensory, motors and association ……………….

what do we refer to in the nervous system when we say:

Gray and white ………………………………

Rearrange the following in correct sequence pertaining to what is given within bracket at the end.

Effector …….. sensory neuron ………. Receptor…….. motor neuron………. Stimulus……. central nervous system………. Response (Reflex arc)

Rearrange the following in correct sequence pertaining to what is given within bracket at the end.

repolarization……. Depolarization…….. Resting….. (polarised) (during conduction of nerve impulse through a nerve fibre)

Rearrange the following in correct sequence pertaining to what is given within bracket at the end.

axon endings ……… nucleus …….. Dendrites ……… axon…….. perikaryon ………. Dendron……. (Neutron structure)

Rearrange the following in correct sequence pertaining to what is given within bracket at the end.

diencephalon ………. Cerebellum …….. medulla oblongata ………. Pons ….. Cerebrum ……. mid-brain (sequence of parts of human brain).

Chapter 8: The Nervous System solutions [Page 0]

What is meant by reflex action?

State whether the following is simple reflex, conditioned reflex or neither of the two:

Sneezing: …………….

State whether the following is simple reflex, conditioned reflex or neither of the two:

Blushing: ……………….

State whether the following is simple reflex, conditioned reflex or neither of the two:

Contraction of eye pupil: …………………..

State whether the following is simple reflex, conditioned reflex or neither of the two:

Lifting up a book: …………………..

State whether the following is simple reflex, conditioned reflex or neither of the two:

Knitting without looking: …………………..

State whether the following is simple reflex, conditioned reflex or neither of the two:

sudden application of brakes of the cycle on sighting an obstacle in front …………….

What are the advantages of having a nervous system?

Why do you call the spinal cord and the brain as the central nervous system?

What is the difference between reflex action and voluntary action?

Draw neat and labelled diagrams of a myelinated neuron

During a street fight between two individuals, mention the effects on the following organs by the autonomous nervous system, in the table given below : (one has been for you as an example).

Organ Sympathetic System Parasympathetic System
e.g. Lungs Dilates bronchi and bronchioles Constricts bronchi and bronchioles
1. Heart    
2. Pupil    
3. Salivary gland    

Chapter 8: The Nervous System solutions [Page 0]

Two hungry boys (A and B) enter a restaurant and find a table decorated as follows:

Boy B starts salivating but not A. Explain the reason for this difference.

Given below are a few situations. What effective change will occur in the organ/body part mentioned and which part (sympathetic or parasympathetic) of the autonomic nervous system brings it about?

Situation Organ/body part Change/action Part of autonomic nervous system involved
1. You have entered a dark room Eye    
2. Your body is consuming lot of glucose while running a race Liver    
3. You are chewing a tasty food Salivary gland    
4. You are running a race Adrenal gland    
5. You are retiring to bed for sleep Heart    
6. You are shivering in intense cold Body hairs    

Given below is the partially incomplete scheme of the components of peripheral nervous system. Fill up the blanks numbered (1) – (8):

Chapter 8: The Nervous System solutions [Page 0]

MULTIPLE CHOICE TYPE:
(Select the most appropriate option).

Which part of the eye is grafted in a needy patient from a donated eye?
(a) Conjunctiva (b) Cornea
(c) Choroid (d) Ciliary muscles

MULTIPLE CHOICE TYPE:
(Select the most appropriate option).

The three parts of human ear contributing in hearing are-
(a) cochlea, ear ossicles and tympanum
(b) semicircular canals, utriculus and sacculus
(c) eutachian tube, tympanum and utriculus
(d) perilymph, ear ossicle and semicircular canals.

MULTIPLE CHOICE TYPE:
(Select the most appropriate option).

Which part of our ear is shaped like a snail shell?
(a) Semi circular canals (b) Cochlea
(c) Stapes (d) Eustachian tube

MULTIPLE CHOICE TYPE:
(Select the most appropriate option).

The region in the eyes where the rods and cones are located is the
(a) retina (b) cornea (c) choroid (d) sclera

Chapter 8: The Nervous System solutions [Page 0]

Name the following:

The photosensitive pigment present in the rods of the retina.

Name the following:

The part which equalizes the air pressure in the middle and external ear.

Name the following:

The ear ossicle attached to the tympanum

Name the following:

The outermost covering layer of the brain

Name the following:

The tube which connects the cavity of the middle ear with the throat

Name the following:

The part of the eye responsible for its shape.

Name the following:

The nerves which transmit impulse from ear to the brain

Name the following:

The photoreceptors found in the retina of the eye.

 

Name the following:

The eye defect caused due to shortening of the eye ball from front to back.

Note the relationship between the first two words and suggest the suitable word for the fourth place.

Cones : Iodopsim :: Rods : ……………….

Note the relationship between the first two words and suggest the suitable word for the fourth place.

sound : ear drum :: Dynamic balance : ……

Which one or more of the expressions in column II are appropriate for the items listed in column I? write the correct matching pairs-

Column I Column II
(i) The blind spot (a) colour of the eye
(ii) the yellow spot (b) shape of the lens
(iii) Ciliary muscle (c) protective covering of the brain
(iv) Iris (d) basic unit of brain
(v) Meninges (e) free of rod cells
  (f) vitreous humour
  (g) centre of the retina
  (h) no sensory cells

Chapter 8: The Nervous System solutions [Page 0]

Differentiate between members of the following pair with reference to what is asked in bracket.

Myopia and hyperopia (cause of the defect)

Differentiate between members of the following pair with reference to what is asked in bracket.

Rods and cones (sensitivity)

Differentiate between members of the following pair with reference to what is asked in bracket.

Semi-circular canal and cochlea (Senses perceived)

Differentiate between members of the following pair with reference to what is asked in bracket.

Rod and cone cells (pigment contained)

Differentiate between members of the following pair with reference to what is asked in bracket.

Dynamic balance and static balance (Definition)

State whether the following statement is True (t) or False, correct them by changing any one single word.
Deafness is caused due to rupturing of the pinna.

State whether the following statement is True (t) or False, correct them by changing any one single word.
Semi circular canals are concerned with static (positional) balance.

Mention, where in living organism is the following located and state their main function:
Fovea centralis

Mention, where in living organism is the following located and state their main function:
Organ of corti

Mention if the following statement is true (T) or false (F) Give reason.
Sometimes medicines dropped into the eyes come into the nose and even throat

Mention if the following statement is true (T) or false (F) Give reason.

Ciliary muscles regulate the size of the pupil

Mention if the following statement is true (T) or false (F) Give reason.

yellow spot of the retina is the region of colour vision

Mention if the following statement is true (T) or false (F) Give reason.

The auditory nerve is purely for perceiving sound

Mention if the following statement is true (T) or false (F) Give reason.

Malleus incus and stapes are collectively called the ear ossicles.

Mention if the following statement is true (T) or false (F) Give reason.

Flavour and taste are one and the same thing.

Mention if the following statement is true (T) or false (F) Give reason.

short-sightedness and hyperopia are one and the same thing

Mention if the following statement is true (T) or false (F) Give reason.

Blind spot is called so because no image is formed on it.

Given below is a set of five parts. Rewrite them in correct sequence.
Cochlea, tympanum, auditory canal, ear ossicles, oval window.

Given below is a set of five parts. Rewrite them in correct sequence.
 Conjunctiva, retina, cornea, optic nerve, lens

Given below is certain structure. Write against them its functional acivity.

organ of corti and ……………….

 

Given below is certain structure. Write against them its functional acivity.

Olfactory nerve and ……………..

 

Given below is certain structure. Write against them its functional acivity.

retina and ……………………….

Given below is certain structure. Write against them its functional acivity.

Taste bud and …………………..

What is meant by power of accommodation of the eye?

What is a lacrimal gland?

In what two ways is the yellow spot different from the blind spot?

Name an old age eye defect. What happens in it?

Mention the characteristics of the image that falls on the retina of the eye.

What is meant by optical illusion? Give one example.

Where is the oval window located? Briefly mention its function.

Where is the Cochlea located? Briefly mention its function.

Where is the Semicircular canals located? Briefly mention its function.

Where is the Utriculus located? Briefly mention its function.

Name the four principal tastes and the respective regions of the tongue concerned with their perception.

Complete the following table by filling in the blank spaces.

Structure Function
Yellow Spot  
  Transfers impulse from inner ear to brain
  Helps to change the focal length of the eye lens
Spinal cord  
Oval window  
  Dynamic equilibrium

Chapter 8: The Nervous System solutions [Page 0]

Describe the mechanism of focusing the image of a distant object in your eye when you raise your head after reading a book.

Sometimes you remember a vivid picture of a dream you saw. What is the role of your eyes in this experience?

By closing the eyes and gently pressing them by your palms, you may see some specks of brilliant light. How do you get this sensation while there is no light entering your eyes?

Explain the terms ‘adaptation’ and ‘accommodation’ with reference to the eye.

You do not enjoy watching a movie from a very short distance from the screen in a cinema hall. Why?

Enumerate the common defects of vision, their causes and the possible methods of correcting them.

Name the three ear ossicles. How do they contribute in the mechanism of hearing?

What is meant by power of accommodation of the eye?

Name the muscles of the eye responsible for the power of accommodation.

Chapter 8: The Nervous System solutions [Page 0]

What is meant by power of accommodation of the eye?

What is the shape of the lens during distant vision?

What is the shape of the lens during near vision?

Name the two structure in the eye responsible for bringing about the change in the shape of the lens.

Name the cells of the retina and its respective pigments which get activated in the light.

Name the cells of the retina and its respective pigments which get activated in the dark.

Give the technical term for the structure found in the inner ear.

What is the biological term for the three small bones present in the middle ear collectively?

Name the three small bones present in the middle ear.

Name the part of the ear associated with hearing.

Name the part of the ear associated with static balance.

Name the part of the ear associated with dynamic balance.

Name the nerve, which transmits messages from the ear to the brain.

The figure below compares a part of our eye with a part of a photographic camera.

(a) name the corresponding parts of the eye the camera shown here that are comparable in function.
(b) Explain the mode of working and the functions of the parts of the eye mentioned above

Given below is a diagram depicting a defect of the human eye. Study the same and answer the questions that follow:

(a) Name the defect shown in the diagram
(b) Give two possible reasons for this defect
(c) Name the parts labelled 1 to 4
(d) Name the type of lens used to correct this eye defect
(e) Draw a labelled diagram to show how the above mentioned defect is rectified using the lens named above.

The figure below is the sectional view of a part of the skull showing s sense organ:

(i) Name the sense organ
(ii) What are the parts labelled ‘m’, “I” and “s”? what do these three parts constitute collectively?
(iii) what do you call the part shown in the form of a spiral? What is it function?
(iv) Name the part labelled “tm”? What is its function?

Given below is the diagram of a part of the human ear. Study the same and answer the questions that follow:

(i) Give the collective biological term for malleus, Incus and stapes
(ii) Name the parts labelled A, B, and C in the diagram
(iii) state the functions of the parts labelled ‘A’ and ‘B’
(iv) Name the audio receptor region present in the part labelled ‘A’

Draw a labelled diagram of the inner ear. Name the part of the inner ear that is responsible for static balance in human beings.

Have a look at the posture of this girl who is reading a book and answer the questions which follow:

(a) Name the problem she is facing

(b) What are the two conditions shown in sections A and B of the eye as applicable to her.

(c) What kind of looking glasses she needs?

Chapter 8: The Nervous System

Selina Selina ICSE Concise Biology Class 10

Selina ICSE Concise Biology for Class 10

Selina solutions for Class 10 Biology chapter 8 - The Nervous System

Selina solutions for Class 10 Biology chapter 8 (The Nervous System) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CISCE Selina ICSE Concise Biology for Class 10 solutions in a manner that help students grasp basic concepts better and faster.

Further, we at shaalaa.com are providing such solutions so that students can prepare for written exams. Selina textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Class 10 Biology chapter 8 The Nervous System are Ear: Parts and Functions of the Ear, Eye Defects and Corrective Measures, Eye: Structure and Functions, Reflex Action and Reflex Arc, Concept of Spinal Cord, Concept of Brain, Division of Nervous System, Nervous System - Structure of Neuron, Concept of Nervous System.

Using Selina Class 10 solutions The Nervous System exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in Selina Solutions are important questions that can be asked in the final exam. Maximum students of CISCE Class 10 prefer Selina Textbook Solutions to score more in exam.

Get the free view of chapter 8 The Nervous System Class 10 extra questions for Biology and can use shaalaa.com to keep it handy for your exam preparation

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