- Tongue is a
(a) rheoreceptor
(b) teloceptor
(c) nociceptor
(d) gustatoreceptor. - Which one of the following is the correct difference
between rod cells and cone cells of our retina?
Rod cells Cone cells
(a) Vision in poor light colour vision and
detailed vision in
bright light
(b) more concentrated in Evenly distributed all over
centre of retina retina
(c) Less in number more in number
(d) Iodopsin rhodopsin - receptor cells for balance in human ear are located in
(a) utricle, saccule and semicircular canals
(b) malleus, incus and stapes
(c) organ of corti
(d) Eustachian tube. - match column-I with column-II and select the correct
option from the codes given below.
Column-I Column-II
a. Pinna (i) collects vibrations in
the air which
produces sound.
B. Ear canal (ii) Passage for sound wave
from pinna to ear drum.
c. Tympanic membrane (iii) Transfers sound wave to
ear ossicles.
D. Ear ossicles (iv) Increases the efficiency
of transmission of sound
waves to the inner ear
E. cochlea (v) has hearing receptors
F. Eustachian tube (vi) Equalizes the pressure on
both sides of ear drum
G. auditory nerves (vii) Impulse transfer
from organ of corti
to auditory cortex in
temporal lobe of
cerebrum.
(a) a–(i), B – (ii), c – (iii), D – (iv), E – (v), F – (vi), G – (vii)
(b) a – (vii), B – (vi), c – (v), D – (iv), E – (iii), F – (ii), G – (i)
(c) a – (i), B – (ii), c – (iv), D – (iii), E – (v), F – (vi), G – (vii)
(d) a – (i), B – (ii), c – (iii), D – (iv), E – (v), F – (vii), G – (vi)
8. match column-I with column-II and select the correct
option from the codes given below.
Column-I Column-II
a. cornea (i) Provides opening for
light to enter
B. Iris (ii) Transduces blue, green
and red light
c. Lens (iii) controls the amount of
light that enters
D. Optic nerves (iv) alter the shape of lens
E. Pupil (v) Transmits information to
the cNS
F. ciliary muscles (vi) Focuses light directly on
retina
G. Fovea (vii) Bends light and protects
inner eye
(a) a – (vii), B – (iii), c – (vi), D – (v), E – (i), F – (iv), G – (ii)
(b) a – (i), B – (ii), c – (iii), D – (iv), E – (v), F – (vi), G – (vii)
(c) a – (vii), B – (vi), c – (v), D – (iv), E – (iii), F – (ii), G – (i)
(d) a – (vii), B – (iv), c – (vi), D – (v), E – (i), F – (iii), G – (ii)
9. The sequence of ear ossicles of vertebrates starting from
tympanum is
(a) stapes, malleus and incus
(b) malleus, incus and stapes
(c) incus, malleus and stapes
(d) stapes, incus and malleus.
10. When sound waves strike pinna and vibration reaches
organ of corti (sensory ridge) on basilar membrane
(a) the receptor cells depolarizes and open voltage-
gated ion channels which transduce signal to
auditory nerve
(b) receptor cells bend accordingly and transmit
impluses to the auditory nerve
(c) sensory hair undergo bending stimulating the
sensory cells and creating the impulse of hearing
which is carried to brain by auditory nerve
(d) sensory hair undergo bending and sensory cells
on tectorial membrane get stimulated, creating
impulse.
11. The size of pupil is controlled by the
(a) ciliary muscles (b) suspensory ligaments
(c) cornea (d) iris muscles.
12. Sensation of stomach pain is due to
(a) interoceptors (b) proprioceptors
(c) exteroceptors (d) teloceptors.
nora
(Nora)
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