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Sense Organs
1. With reference to the example of African snail, animals are responsive to _________.
(1) and (2)
(2) and (3)
(1), (2) and (3)
(1), (2), (3) and (4)
(1)Light(2)Touch(3)Smell(4)Taste
2. Light from the outside enters the eyeball through
the retina.
the pupil.
the sclerotic coat.
the optic nerve.
3. Which of the following about the path of light entering the eyes is CORRECT?
lens -> pupil -> cornea -> jelly-like fluid -> sclerotic coat
pupil -> cornea -> lens -> jelly-like fluid -> retina
cornea -> pupil -> lens -> jelly-like fluid -> retina
iris -> lens -> jelly-like fluid -> retina
4. Retina contains millions of
light-sensitive cells.
optic nerve.
lens.
iris.
5. Which of the followings are light sensitive cells found on the surface of retina?
(1) and (2) only
(2) and (3) only
(1), (2) and (3) only
(1), (2), (3) and (4)
(1)Nerve endings (2)Rod cells(3)Cone cells(4)Blind spot cells
6. Cone cells can identify _____ , _____ and _____ colours.
yellow、 green 、 blue
red 、 green 、 blue
red 、 green 、 yellow
7. We have two eyes located at the front of the head, their visions are forward and overlap in the middle. Which of the
following is an advantage of this arrangement?
We can see the object clearly.
It helps us to judge the distance of an object.
It helps us to distinguish the colours of the object.
It helps us to judge the size of an object.
8. When light rays of an object fall on the blind spot,
the person will see the object black.
the person cannot see the object.
no image will be formed.
the person will see the object blurred.
9. Sometimes a driver may not be able to see the traffic condition behind through the rear view mirror. The reason is because
The image of the approaching car at the back falls on the yellow spot.
The image of the approaching car at the back falls on the blind spot.
The image of the approaching car at the back falls on the optic nerve.
No image can be formed on the retina.
10. Which of the following structure detects the sound vibrations?
cochlea
eardrum
auditory nerve
ear bone
11. There are three parts in the inner ear : semi-circular canals, vestibule and ________ .
eardrum
ear bone
pinna
cochlea
12. _______ and _______ give the sense of position and balance of the body.
semi-circular canals, cochlea
semi-circular canals, vestibule
vestibule , cochlea
ear bones, semi-circular canals
13. Which of the following about the path of sound waves entering the ears is CORRECT?
eardrum -> ear canal -> ear bones -> auditory nerve -> cochlea
ear bones -> cochlea -> eardrum -> ear canal -> auditory nerve
ear canal -> eardrum -> ear bones -> cochlea -> auditory nerve
cochlea -> ear canal -> ear bones -> eardrum -> auditory nerve
14. The receptor that can be found inside the nose is
pain receptor.
touch receptor.
smell receptor.
taste receptor.
15. Which of the following about the tongue is CORRECT?
Bitter-sensitive area locates at the tip of the tongue.
Sour-sensitive area locates at the two sides of the tongue.
Sweet-sensitive area locates at the back of the tongue.
The tongue can detect four primary tastes: sour, sweet, bitter and spicy.
16. The skin contains different kinds of receptors:(i) Temperature receptor(ii) Touch receptor(iii)Pressure receptor(iv)Pain receptor
Only (i) and (ii)
Only (i)、 (ii) and (iii)
Only (i)、 (ii) and (iv)
(i)、 (ii) 、 (iii) and (iv)