sense organs

Which of the following correctly traces the energy of sound waves into the ear?

• Auditory canal-eardrum-ear bones-cochlea

• Eardrum-auditory canal-cochlea-ear bones

• Auditory canal-ear bones-eardrum-cochlea

• Eardrum-auditory canal-ear bones-cochlea

In which of the following is the perception of colour possible?

• Birds

• Reptiles

• Men

• Both (a) and (c)

Which part of the ear has no role to play in hearing but is very important?

• Ear ossicles

• Organ of Corti

• Eustachian tube

• Vestibular apparatus

Which of the following is a correct match of ear part and its function?

• Semicircular canal – equalizes the pressure on either sides of the ear drum

• Tectorial membrane – determines patterns of vibration of sound waves 

• Eustachian tube – maintains body balance and posture 

• Organ of Corti – increases the efficiency of sound waves

Where is aqueous humor present?

• In front of the retina

• In front of the cornea

• Behind the conjunctiva

• In front of the lens

The basilar membrane is present between

• scala vestibule and scala media

• scala media and scala tympani

• both (a) and (b)

• scala vestibule and scala tympani

What is present/absent in the blind spot where the optic nerves exits the eye?

• Rods and cones are absent

• Only cones are present

• Only rods are present

• Special neurons are present

Rods and cones of retina are modified

• Hair

• Unipolar neurons

• Bipolar neurons

• Multipolar neurons

Mammalian eyes controls the power of accommodation by changing the shape of their lenses.This is controlled by

• Cornea

• Pupil

• Iris

• Ciliary body

Find the incorrect match

• Middle ear – amplifies sound waves

• Hair cells – present on basilar membrane

• Saccule and utricle – maintain static equilibrium

• Cristae – perform hearing function