Sense Organs AP  9th Class Biology Bits 6th Lesson

Sense Organs

AP  9th Class Biology Bits 6th Lesson

Choose the correct answers :

Question 1.
Conditions, substances etc in nature that trigger the process of sensing them by our body are called
A) stimulants
B) activation
C) catalysts
D) enzymes
Answer:
A) stimulants

Question 2.
Stimuli from the environment around are received by our body through
A) eye, ear
B) nose, tongue
C) skin
D) all
Answer:
D) all

Question 3.
This is the centre for all sensitive activities.
A) spinal cord
B) brain
C) heart
D) eyes
Answer:
B) brain

Question 4.
Nerves that bring nerve signals from the sense organs are called
A) motor nerves
B) spinal nerves
C) sensory nerves
D) all
Answer:
C) sensory nerves

Question 5.
A thin layer that covers the front portion of the eye
A) sclera
B) choroid layer
C) lens
D) conjunctiva
Answer:
D) conjunctiva

Question 6.
How much portion of eye ball is visible to us ?
A) 1/4th
B) 1/6th
C) 1/5th
D) 1/7th
Answer:
B) 1/6th

Question 7.
The layer of the eye that contains lot of blood vessels
A) conjunctiva
B) sclera
C) choroid layer
D) retina
Answer:
C) choroid layer

Question 8.
Jelly like fluid is present in this part of the eyeball.
A) aqueous chamber
B) vitreous chamber
C) choroid layer
D) sclera
Answer:
B) vitreous chamber

Question 9.
Eye gathers light through a lens and image is formed on
A) sclera
B) iris
C) pupil
D) retina
Answer:
D) retina

Question 10.
Rods of retina contains a pigment called
A) rhodopsin
B) idopsin
C) photopsin
D) ketopsin
Answer:
A) rhodopsin

Question 11.
Cones help in
A) seeing in the dark
B) cannot make distinction of colour
C) identifying the colours
D) produces tears
Answer:
C) identifying the colours

Question 12.
The part of the retina that has no photoreceptors
A) blind spot
B) yellow spot
C) green spot
D) black spot
Answer:
A) blind spot

Question 13.
The glands present in eye are
A) lachrymal glands
B) ceruminous glands
C) sebaceous glands
D) mucous glands
Answer:
A) lachrymal glands

Question 14.
The adjustable part in the eye is
A) eyelid
B) biconvex lens
C) retina
D) cornea
Answer:
B) biconvex lens

Question 15.
Pinna is
A) external ear
B) middle ear
C) inner ear
D) all
Answer:
A) external ear

Question 16.
The chain of bones present in the middle ear
A) malleus
B) incus
C) stapes
D) all
Answer:
D) all

Question 17.
The ear canal is also called
A) tympanum
B) auditory meatus
C) ear drum
D) middle ear
Answer:
B) auditory meatus

Question 18.
Middle ear opens into the inner ear through
A) spherical window
B) oval window
C) round window
D) elliptical window
Answer:
C) round window

Question 19.
How many taste buds are present on tongue ?
A) 100
B) 1000
C) 10,000
D) 5,000
Answer:
C) 10,000

Question 20.
Olfactory receptors are present in
A) skin
B) eye
C) ear
D) nose
Answer:
D) nose

Question 21.
Metallic taste of food is present in
A) natural foods
B) artificial foods
C) raw foods
D) cooked foods
Answer:
B) artificial foods

Question 22.
Taste buds are present in this structures on tongue
A) fungi form papillae
B) foliate papillae
C) fungi form and foliate papillae
D) filiform papillae
Answer:
C) fungi form and foliate papillae

Question 23.
Cutaneous receptors are present in
A) ear
B) tongue
C) nose
D) skin
Answer:
D) skin

Question 24.
Dermis layer of skin contains
A) sweat glands
B) sebaceous glands, blood vessels
C) hair follicles, fats
D) all
Answer:
D) all

Question 25.
Receptors present in skin for touch
A) tactile receptors
B) pacinial corpuscles
C) nocireceptors
D) all
Answer:
A) tactile receptors

Question 26.
Pellagra is the disease of skin due to the deficiency of
A) proteins
B) vitamins
C) hormones
D) enzymes
Answer:
B) vitamins

Question 27.
Melanin is the pigment present in
A) ear
B) tongue
C) nose
D) skin
Answer:
D) skin

Question 28.
Identify the disease of skin.
B) xeropthalmic
C) leucoderma
D) glaucoma
Answer:
C) leucoderma

Question 29.
The term ‘gustation’ refers to what sense ?
A) Taste
B) Smell
C) Hear
D) Touch
Answer:
A) Taste

Question 30.
The aperture controlling the amount of light entering the eye is called
A) Lens
B) Cornea
C) Pupil
D) Retina
Answer:
C) Pupil

Question 31.
The term “Olfaction” explicitly refers to which sense ?
A) Hear
B) Smell
C) Touch
D) Sight
Answer:
B) Smell

Question 32.
The Fovea is the part of retina that contain photoreceptors called
A )Rods
B) Cones
C) Nerves
D) Blood vessels
Answer:
B) Cones

Question 33.
What structure provides the boundary between the outer and middle ear ?
A) Cochlia
B) Pinna
C) Tympanum
D) Ear drum
Answer:
C) Tympanum

Question 34.
The small bony chamber of the ear which coils about two and half turns is known as
A) Tympanum
B) Cochlia
C) Pinna
D) None
Answer:
B) Cochlia

Question 35.
Sensitive pigment layer of the eye is
A) Cornea
B) Retina
C) Iris
D) Sclerotic
Answer:
B) Retina

Question 36.
Colour vision is due to ……………….
A) cone cells
B) acute in dim light
C) different wavelengths of coloured light stimulating the rods
D) both A and B
Answer:
A) cone cells

Question 37.
Cones in the eye are sensitive to the following colours …………………..
A.) Red, green, amber
B) Red, violet, and yellow
C) Blue, red and yellow
D) Red, green, blue
Answer:
C) Blue, red and yellow

Question 38.
Which of the following provides an attachment point for extrinsic muscles of the eye ball ?
A) Iris
B) Retina
C) Sclera
D) Choroid coat
Answer:
A) Iris

Question 39.
The chief function of the middle ear is-
A) Amplify sound waves
B) Help to move the external pinna
C) Secrete waxy substance which repel insects
D) Keep the basilar membrane separated
Answer:
D) Keep the basilar membrane separated

Question 40.
Retina is most sensitive at ………………
A) Periphery
B) Macula
C) Fovea
D) Optic disc
Answer:
C) Fovea

Question 41.
The photosensitive substance in the eyes of mammals
A) Retinol
B) Rhodopsin
C) Sclerotin
D) Melanin
Answer:
B) Rhodopsin

Question 42.
The other name for eardrum is known as
A) Pinna
B) Auditory canal
C) Tympanic membrane
D) Oval window
Answer:
C) Tympanic membrane

Question 43.
Which of these bones is not found in the middle ear ?
A) Malleus
B) Incus
C) Stapes
D) Ulmar
Answer:
D) Ulmar

Question 44.
Melanin protects us from harmful affects of –
A) bacteria
B) virus
C) allergy
D) light
Answer:
D) light

Question 45.
The largest sense organ of our body
A) Eyes
B) Nose
C) Skin
D) Tongue
Answer:
C) Skin

Question 46.
This is not an eye disease.
A) Pellagra
B) Cataract
C) Glacoma
D) Astigmatism
Answer:
A) Pellagra

Question 47.
This is not a skin disease.
A) Leucoderma
B) Pellagra
C) Ringworm
D) Rickets
Answer:
D) Rickets

Question 48.
The sense organ that regulates the body temperature
A) Nose
B) Skin
C) Ear
D) Eye
Answer:
B) Skin

Question 49.
Vastibular apparatus maintains body is
A) Temperature
B) Pressure
C) Equilibrium
D) None
Answer:
C) Equilibrium

Question 50.
‘Leprosy’ is related to this organ.
A) Ears
B) Eyes
C) Nose
D) Skin
Answer:
D) Skin

Question 51.
Sebacious glands produce ………………
A) Sweat
B) Sebum
C) Tears
D) Wax
Answer:
B) Sebum

Question 52.
Choroid layer provides the following to the eye ……………….
A) strength
B) colour
C) protection
D) none
Answer:
B) colour

Question 53.
The most important sense organ.
A) Eye
B) skin
C) Ear
D) Tongue
Answer:
A) Eye

Question 54.
This is very harmful to our eyes.
A) Bright light
B) Smoke
C) UV light
D) All
Answer:
D) All

Question 55.
Middle ear’s main function is
A) Wax production
B) Amplifying the sounds
C) Receiving sound waves
D) A and C
Answer:
B) Amplifying the sounds

Question 56.
Identify the mismatched pair from the following.
1) Pinna – External
2) Tympanum – Ceruminous gland
3) Wax producing – Ear drum

1. A) 1 only
   B) 3 only
   C) 2, 3
   D) 1, 3
   Answer:
   C) 2, 3

Question 57.
Read the following statements carefully.
a) The cones are concentrated in fovea, which gives us the sharpest vision.
b) Cornea is the clean window in front of Iris.
A) a correct, b incorrect
B) b correct, a incorrect
C) both a, b incorrect
D) a, b are correct
Answer:
D) a, b are correct

Question 58.
Identify the mismatched pair.
1) Leucoderma – Skin
2) Cataract – Nose
3) Deafness – Ear
A) 1,3
B) 2, 3
C) 1 only
D) 2 only
Answer:
D) 2 only

Question 59.
Read the following statements.
a) Blind spot is the area, where the optic nerves leave the eye
b) Ceruminous glands produce oil in the ear.
A) Both a, b correct
B) Both a, b incorrect
C) a correct, b incorrect
D) b correct, a incorrect
Answer:
C) a correct, b incorrect

Question 60.
Identify the mismatched pair.
1) Smell – Olfactory neui.
2) Tears – Lachrymal giai
3) Wax – Ceruminous gL
A) 1, 2
B) 2, 3
C) 2 only
D) All are correct
Answer:
D) All are correct

Eye disease or defect	Characteristics
1. Age related macular degeneration	It is an eye condition that leads to the deterioration of the centre of the retina called macula.
2. Astigmatism	It is an imperfection in the curvature of retina.
3. Cataract	It is the clouding of the eye lens causing vision problems.
4. Central retinal vein occlusion	It is a blockage of the main vein in the retina.
5. Colour blindness	Occurs when we are unable to see colours in a normal way.

Question 61.
Study the table and answer the following question.
This disease is related to the curvature of retina.
A) Astigmatism
B) Cataract
C) Central retinal vein occlusion
D) Colour blindness

Eye disease or defect	Characteristics
1. Conjunctivitis	It is the swelling of the conjunctiva, the eye becomes red. burning sensation in the eye, releases water.
2. Corneal transplant	Scars, swelling or an irregular shape can cause the cornea to scatter or distart light resulting in glare or blurring vision.
3. Diabetic retinopathy	It is a common diabetic eye disease caused by changes in retinal blood ves­sels.
4. Dry eye or Xeropthalmia	It is a condition where the eyes do not pro­; duce enough tears or the right quality of tears to be healthy or comfortable and eye becomes dry.
5. Far sightedness (Hypermetropia)	It is a refractive error, which means the eye does not bend or refract light properly. Images are formed behind the retina.
6. Glaucoma	It is a disease that damages the eyes optic nerve. This leads to high pressure in the back of the eye.
7. Kerolitis	It is a condition where the cornea be­comes swollen or inflamed, making the eye red and painful effecting vision.

Answer:
A) Astigmatism

Question 62.
Study the table and answer the following question. In this disease images are formed
behind the retina.
A) Xeropthalmia
B) Hypermetropia
C) Glaucoma
D) Kerolitis
Answer:
B) Hypermetropia

Question 63.
Identify this structure.

A) Skin
B) Eye
C) Tongue
D) Ear
Answer:
C) Tongue

Question 64.
The given picture depicts the following statements.

A) It is an illusion where the stimulus pattern is interpreted incorrectly by the mind.
B) It is dispersion where the stimulus pattern is interpreted incorrectly by the mind.
C) It is right interpretation of the stimulus pattern by mind due to diffusion.
D) It is a reflection where there is an accuracy between what we see and the external reality.
Answer:
A) It is an illusion where the stimulus pattern is interpreted incorrectly by the mind.

Question 65.
Choose the correct matching from the following.
List – A
1) Fovea
2) Hotline
3) Ear canal
c) Yellow spot

List – B
a) Tongue
b) Auditory meatus
c) Yellow spot
A) 1 – a, 2 – b, 3 – c
B) 1 – b, 2 – a, 3 – c
C) 1 – c, 2 – b, 3 – a
D) 1 – c, 2 – a, 3 – b
Answer:
D) 1 – c, 2 – a, 3 – b

Question 66.
Pickout the correct matching from the following.
List – A
1. Cutaneous Receptors
2) Nociceptors
3) Pacinian corpuscles

List – B
a) The sense of touch Nociceptors
b) Pressure Pacinian corpuscles
c) Temperature
A) 1 – c, 2 – b, 3 – a
B) 1 – a, 2 – b, 3 – c
C) 1 – b, 2 – c, 3 – a
D) 1 – a, 2 – c, 3 – b
Answer:
D) 1 – a, 2 – c, 3 – b

1. Match the following :
   1.

Group A	Group B
1) Fovia	A) Skin
2) Hotline	B) Nose
3) Ear canal	C) Tongue
4) Olfactory receptors	D) Yellow spot
5) Cutaneous receptors	E) Blind spot
	F) Auditory meatus
	G) Inner ear

Answer:
1) Fovia – D) Yellow spot
2) Hotline – C) Tongue
3) Ear canal – F) Auditory meatus
4) Olfactory receptors – B) Nose
5) Cutaneous receptors – A) Skin

2.

Group A	Group B
1) Pinna	A) Identification
2) Tympanum	B) Savory flavor
3) Umami	C) Colour of the skin
4) Iris	D) External ear
5) Melanin	E) Ceruminous gland
6) Wax producing	F) Ear drum
	G) Lubrication

Answer:
1) Pinna – D) External ear
2) Tympanum – F) Ear drum
3) Umami – B) Savory flavor
4) Iris – A) Identification
5) Melanin – C) Colour of the skin
6) Wax producing – E) Ceruminous gland

3.

Group A	Group B
1) Myopia	A) Bacterial disease
2) Hypermetropia	B) Deficiency of vitamins
3) Leucoderma	C) Viral disease
4) Leprosy	D) Skin
5) Pellagra	E) Near sightedness
	F) Dry eyes
	G) Far sightedness

Answer:
1) Myopia – E) Near sightedness
2) Hypermetropia – G) Far sightedness
3) Leucoderma – D) Skin
4) Leprosy – A) Bacterial disease
5) Pellagra – B) Deficiency of vitamins

Question 67.
The eye is divided into aqueous chamber and vitreous chamber by
A) Lens
B) Pupil
C) Iris
D) Choroid
Answer:
A) Lens

Question 68.
Equilibrium of the body, pertaining to the posture and balance are maintained by
A) Utri cuius only
B) Utriculus, Sacculus
C) Utriculus, Sacculus and Semilunar canals
D) Utriculus, Sacculus, Semicircular canals and cochlea
Answer:
C) Utriculus, Sacculus and Semilunar canals

Question 69.
Biologically, the sense of smell begins with
A) Visual perception
B) Thinking of smell
C) Tasting food
D) Chemical events in nose
Answer:
D) Chemical events in nose

Question 70.
Melanin is responsible for
A) Detection of pressure
B) Formation of nails, hair
C) Skin colour
D) Thermo regulation
Answer:
C) Skin colour

Question 71.
The deficiency of pigment melanin leads to………………
A) Leucoderma
B) Pellagra
C) Ringworm
D) Tanning
Answer:
A) Leucoderma

Question 72.
Which of the following is a function of tears secreted by eyes ?
A) To identify colours
B) To control the amount of light entering the eye
C) To keep the eyes moist
D) They do not have any function
Answer:
C) To keep the eyes moist

Question 73.
A student took plastic funnel and stretched a piece of balloon over its widen part. He put some mustard seeds on it and shouted loud. His purpose is
A) Sound is produced from vibration of vocal cords
B) Sound is a kind of energy that vibrates only the mustard seeds
C) Sound is produced due to vibration of particles
D) We can hear sound as the particles of air are vibrated and waves are formed
Answer:
D) We can hear sound as the particles of air are vibrated and waves are formed

Question 74.
A boy of your street is feeling itchy in his ear. As a biology student you would
A) Tell him to take a matchstick and scrap
B) Put some oil in the ear
C) Put some saline water in the ear
D) Consult an ENT
Answer:
D) Consult an ENT

Question 75.
Match the following :

1. Tongue	a. Receptor
2. Ear	b. Tympanum
3. Nose	c. Taste buds

1. A) c, a, b
   B) a, b, c
   C) c, b, a
   D) b, a, c
   Answer:
   C) c, b, a

Question 76.
Name of the smallest bone present in the ear
A) Malleus
B) Stapes
C) Incus
D) Tympanum
Answer:
B) Stapes

Question 77.
What will you do to prevent eye diseases.
A) Clean the eyes 3-4 times
B) Consume Vitamin-A food
C) Don’t squeze the eyes
D) All of these
Answer:
D) All of these

Question 78.
P : Ravi cannot identify some colours.
Q : Cones are absent in the eyes of Ravi
A) P, Q both are true
B) Q is not the correct explanation to P
C) There is no relation between P and Q
D) Q is the correct explanation to P
Answer:
A) P, Q both are true

Question 79.
Your Iris is photographed while issuing AADHAR card. Can you guess the reason for it.
A) Iris patterns are individual specific
B) The colour of the eyes are different to each and everyone.
C) To identify the eye – defects.
D) To save time.
Answer:
A) Iris patterns are individual specific

Question 80.
Identify the correct sequence of bones in the structure of ear.
A) Malleus, Incus and Stapes
B) Stapes, Incus and Malleus
C) Incus, Malleus and Stapes
D) Malleus, Stapes and Incus
Answer:
A) Malleus, Incus and Stapes

Question 81.
P : Sense organs recognise stimuli only.
Q : Brain analyses the stimuli and sends proper responses.
A) P only correct
B) Q only corect
C) Both P, Q correct
D) Both P, Q not correct
Answer:
C) Both P, Q correct

Question 82.
Elder people can’t identify different tastes while consuming food. Can you guess the reason for it.
A) Olfactory receptors lost their efficiency
B) Taste receptors lost their efficiency
C) Closure of nasal cavity
D) Both A and B
Answer:
D) Both A and B

Question 83.
If a person consumes high salty food then
A) recognises the taste of salt.
B) he likes the taste of salt.
C) he does not like the taste of salt.
D) he does not identify the taste of low salt food.
Answer:
D) he does not identify the taste of low salt food.

Question 84.
You have collected the information about eye diseases from the doctor. Identify the disease that is related to eye
A) Leucoderma
B) Glaucoma
C) Polio
D) Malaria
Answer:
B) Glaucoma

Question 85.
The taste we identify here is ……………….

A) Bitter
B) Sweet
C) Sour
D) Umami
Answer:
A) Bitter

Question 86.
Anitha labelled nose internal structure as shown below.
Nose – Olfactory receptors – Nasal sep-tum – Epiglottis – Mucus membrane Which of the following is incorrect ?
A) Mucus membrane
B) Epiglottis
C) Olfactory receptors
D) Nasal septum
Answer:
B) Epiglottis

Question 87.
What is the function of the part labelled “P” in the given figure ?

A) Protect the epidermis
B) Sensation of touch
C) Produce Sweat
D) Secretion of sebum
Answer:
D) Secretion of sebum

Question 88.
A student labelled the parts as shown in the picture. Choose the correct match.

1. Fungiform papillae
2. Foliate paplllae
3. Vallate paplllae
A) a- 1, b – 3, c – 2
B) a – 1,b – 2,c – 3
C) a – 3, b – 2, c – 1
D) a – 2,b – 3,c – 1
Answer:
C) a – 3, b – 2, c – 1

Question 89.
Read the following :
Infants have heightened taste sensitiv¬ity that is why babies try to sense ev¬erything by taste.
Choose the correct statement in the following :
a) The supersensitivity however de¬creases with age
b) Many elderly people complain that food has lost its taste.
A) Both a, b are incorrect
B) Both a, b are correct
C) a is true, b is false
D) a is false, b is true
Answer:
B) Both a, b are correct

Question 90.
The lens divides the inner eyeball as (i) chamber and (ii) chamber :
A) i – aqueous, ii – cochlear
B) i – vitreous, ii – vegtibale
C) i – cochlear, ii – aqueous
D) i – aqueous ii – vitreous
Answer:
D) i – aqueous ii – vitreous

Question 91.
The bones in the middle ear serve to amplify sound wave action from the tympanic membrane and transmit to

A) the semicircular canals
B) the oval window
C) the round window
D) the eustachian tube
Answer:
C) the round window

Question 92.
Situation – (i) : Recognise the taste by just keeping the food on tongue.
Situation – (ii) : Recognise the taste by just pressing the food against palate. Which situation makes you recognise the taste ?
A) Applicable only for solid substances
B) i only
C) ii only
D) i and ii
Answer:
C) ii only

Question 93.
Which cells help to identify the colours in eyes ?
A) Melanocytes
B) Rods, Cones
C) Rods only
D) Cones only
Answer:
D) Cones only

Question 94.
Raju rinsed his mouth with high concentrated salt water. What happens to his tongue?
a) Learns to taste salty things better
b) Able to taste less salty things just after the exposure
c) Hates tasting salty things
d) Fails to take a less salty things just after the exposure
A) d only
B) a only
C) b only
D) c only
Answer:
A) d only

Question 95.
If mucus membrane is lost in the nasal cavity, what would be the consequences ?
a) Nasal cavity can’t hold dust-germs
b) Nasal cavity can’t remove dust
c) Nasal cavity fail to allow air
d) Nasal cavity allow more air
A) d only
B) a, b only
C) a only
D) a, c only
Answer:
B) a, b only

Question 96.
Select the suitable questions in the following to conduct a quiz on eye diseases in your school.
a) What is meant by xeropthalmia ?
b) What are the differences between myopia and Hypermetropia ?
c) Name the vitamin which helps the eye
d) Why some people have eye defects by birth ?
e) Is colour-blindness hereditary dis-ease?
A) Only a, d, e correct
B) Only a, b, c correct
C) Only c, d, e correct
D) All are correct
Answer:
D) All are correct