NEET Biology Sensory Organs MCQs Set 04

Download NEET MCQs for NEET Biology: Sensory Organs

Access targeted multiple-choice questions for Sensory Organs designed to align with the latest NEET academic syllabus for NEET Biology. These objective practice sets help students evaluate their conceptual understanding and improve exam readiness.

Chapter-wise Objective Questions: Sensory Organs

View or download the dedicated Sensory Organs MCQ resource below. Practicing these 50 objective questions regularly builds familiarity with standard exam patterns and helps secure higher marks in final Biology evaluations.

Multiple Choice Questions

Question 1: Which of the following is the anvil shaped ear ossicle?
(a) Incus
(b) Malleus
(c) Stapes
(d) Humerus
Show Answer & Explanation

Answer: (a) Incus

Explanation:
1. Incus means anvil, malleus means hammer and stapes means stirrup.

Teacher's Note:
1. They form a chain across the middle ear.

Question 2: Which of the following is the stirrup shaped ear ossicle?
(a) Incus
(b) Stapes
(c) Malleus
(d) Humerus
Show Answer & Explanation

Answer: (b) Stapes

Explanation:
1. The stapes is shaped like a stirrup and is the smallest bone in the body.

Teacher's Note:
1. It fits into the oval window.

Question 3: The fenestra ovalis is the opening of the:
(a) Cranium
(b) Tympanum
(c) Tympanic cavity
(d) Brain
Show Answer & Explanation

Answer: (c) Tympanic cavity

Explanation:
1. The oval window (fenestra ovalis) is an opening in the wall of the middle ear (tympanic cavity), covered by the stapes footplate.

Teacher's Note:
1. The round window is the other opening.

Question 4: In man, the muscles which move the pinnae are:
(a) Absent
(b) Vestigial
(c) Functional more
(d) Functional
Show Answer & Explanation

Answer: (b) Vestigial

Explanation:
1. The auricular muscles are vestigial in man.

Teacher's Note:
1. Many animals can move their pinnae.

Question 5: The ear ossicles of man lie in the:
(a) Auditory capsules
(b) External auditory meatus
(c) Tympanic cavity
(d) Tympanic bulla
Show Answer & Explanation

Answer: (c) Tympanic cavity

Explanation:
1. The ossicles lie in the middle ear (tympanic cavity).

Teacher's Note:
1. The cavity is air-filled.

Question 6: The scala vestibuli communicates with the scala tympani through a narrow canal called:
(a) Ductus endolymphaticus
(b) Helicotrema
(c) Ductus utriculi
(d) Sacculo utricular canal
Show Answer & Explanation

Answer: (b) Helicotrema

Explanation:
1. The helicotrema is the opening at the apex of the cochlea that joins the two scalae.

Teacher's Note:
1. Perilymph passes through it.

Question 7: The tympanic cavity is the:
(a) Columella auris
(b) Middle ear
(c) Eustachian tube
(d) Internal ear
Show Answer & Explanation

Answer: (b) Middle ear

Explanation:
1. The tympanic cavity is the air-filled middle ear.

Teacher's Note:
1. It contains the three ossicles.

Question 8: One of the following is correct:
(a) Semicircular canal - balancing
(b) Cochlea - hearing
(c) Utriculus and sacculus - balancing
(d) All of the above
Show Answer & Explanation

Answer: (d) All of the above

Explanation:
1. The semicircular canals, utricle and saccule maintain balance, while the cochlea is for hearing.

Teacher's Note:
1. All three pairs are correct.

Question 9: In the tympanic cavity there is an aperture in which the stapes is fitted. It is:
(a) Foramen rotundus
(b) Foramen triosseum
(c) Fenestra ovalis
(d) Fenestra rotanda
Show Answer & Explanation

Answer: (c) Fenestra ovalis

Explanation:
1. The stapes fits into the fenestra ovalis (oval window).

Teacher's Note:
1. The round window is closed by a membrane.

Question 10: The cochlea is mainly responsible for:
(a) Balance only
(b) Hearing only
(c) Both balancing and hearing
(d) Perception of colour
Show Answer & Explanation

Answer: (b) Hearing only

Explanation:
1. The cochlea is the organ of hearing.

Teacher's Note:
1. The vestibular apparatus is for balance.

Question 11: The bone which is in contact with the fenestra ovalis is:
(a) Malleus
(b) Incus
(c) Stapes
(d) None
Show Answer & Explanation

Answer: (c) Stapes

Explanation:
1. The footplate of the stapes fits in the oval window.

Teacher's Note:
1. The malleus touches the tympanic membrane.

Question 12: The order of ear ossicles from the inner side of the middle ear is:
(a) Malleus, incus, stapes
(b) Stapes, incus, malleus
(c) Incus, stapes and malleus
(d) Malleus, stapes, incus
Show Answer & Explanation

Answer: (b) Stapes, incus, malleus

Explanation:
1. Starting from the inner side the order is stapes, incus, malleus.

Teacher's Note:
1. Sound goes from malleus to incus to stapes.

Question 13: The endolymph contains white crystals of CaCO3 called:
(a) Otoconia
(b) Otolith
(c) Ear dust
(d) All of the above
Show Answer & Explanation

Answer: (d) All of the above

Explanation:
1. The crystals are called otoconia, otoliths or ear dust.

Teacher's Note:
1. They are present in the utricle and saccule.

Question 14: Which of the following is part of the middle ear?
(a) Cochlea
(b) Utriculus
(c) Sacculus
(d) Malleus
Show Answer & Explanation

Answer: (d) Malleus

Explanation:
1. The malleus is an ossicle of the middle ear.

Teacher's Note:
1. The cochlea, utricle and saccule belong to the inner ear.

Question 15: The tensor tympani and stapedius muscles are found in the:
(a) External ear
(b) Middle ear
(c) Internal ear
(d) External auditory meatus
Show Answer & Explanation

Answer: (b) Middle ear

Explanation:
1. These two small muscles of the middle ear reduce the movement of the ossicles to protect the ear from loud sounds.

Teacher's Note:
1. They act reflexively.

Question 16: The organ of Corti is a modification of the:
(a) Tectorial membrane
(b) Reissner's membrane
(c) Basilar membrane
(d) Meissner's membrane
Show Answer & Explanation

Answer: (c) Basilar membrane

Explanation:
1. The organ of Corti rests on the basilar membrane, which is where it is formed.

Teacher's Note:
1. Hair cells are embedded in it.

Question 17: The function of the Eustachian tube is to:
(a) Provide air to the ear ossicles
(b) Remove dirt from the middle ear
(c) Keep the middle ear in proper shape
(d) Maintain proper air pressure in the middle ear and internal ear for protecting them from damage by loud sound
Show Answer & Explanation

Answer: (d) Maintain proper air pressure in the middle ear and internal ear for protecting them from damage by loud sound

Explanation:
1. The Eustachian tube connects the middle ear to the pharynx and equalises the air pressure on both sides of the tympanic membrane.

Teacher's Note:
1. It opens while swallowing.

Question 18: The structure in the internal ear which resembles a snail shell is called:
(a) Organ of Corti
(b) Membranous labyrinth
(c) Cochlea
(d) Ear ossicles
Show Answer & Explanation

Answer: (c) Cochlea

Explanation:
1. The coiled cochlea looks like a snail shell.

Teacher's Note:
1. It makes two and a half turns in humans.

Question 19: The sound vibration is finally exhausted at the:
(a) Organ of Corti
(b) Round window (fenestra rotundus)
(c) Fenestra ovalis
(d) Tympanic membrane
Show Answer & Explanation

Answer: (b) Round window (fenestra rotundus)

Explanation:
1. Pressure waves travelling in the perilymph are absorbed at the membrane of the round window.

Teacher's Note:
1. This prevents echoes in the cochlea.

Question 20: Which of the following structures is NOT related to body balance?
(a) Maculae
(b) Crista
(c) Organ of Corti
(d) Ampulla
Show Answer & Explanation

Answer: (c) Organ of Corti

Explanation:
1. The organ of Corti is for hearing. Maculae, cristae and ampullae are for balance.

Teacher's Note:
1. The vestibular apparatus controls balance.

Question 21: The scala media is present in:
(a) Part of the middle ear
(b) Cochlear canal
(c) Chamber of semicircular canal
(d) Chamber which is related to perilymph
Show Answer & Explanation

Answer: (b) Cochlear canal

Explanation:
1. The scala media is the cochlear duct containing endolymph, which has the organ of Corti.

Teacher's Note:
1. It lies between the scala vestibuli and scala tympani.

Question 22: The Eustachian tube is related with the:
(a) External ear
(b) Middle ear
(c) Internal ear
(d) Auditory canal
Show Answer & Explanation

Answer: (b) Middle ear

Explanation:
1. It connects the middle ear cavity with the pharynx.

Teacher's Note:
1. It equalises the pressure.

Question 23: Which of the following muscles are related to the middle ear?
(a) Tensor tympani
(b) Stapedius
(c) Both tensor tympani and stapedius
(d) Extrinsic and intrinsic muscles
Show Answer & Explanation

Answer: (c) Both tensor tympani and stapedius

Explanation:
1. The tensor tympani and the stapedius are the muscles of the middle ear.

Teacher's Note:
1. They protect against loud sounds.

Question 24: The passage connecting the middle ear with the pharynx is called:
(a) Cochlear canal
(b) Vestibular canal
(c) Tympanic canal
(d) Eustachian canal
Show Answer & Explanation

Answer: (d) Eustachian canal

Explanation:
1. The Eustachian (auditory) tube joins the middle ear to the pharynx.

Teacher's Note:
1. It is also called the pharyngotympanic tube.

Question 25: Which part of the human ear plays no role in hearing as such but is otherwise very much required?
(a) Vestibular apparatus
(b) Ear ossicles
(c) Eustachian tube
(d) Organ of Corti
Show Answer & Explanation

Answer: (a) Vestibular apparatus

Explanation:
1. The vestibular apparatus is for balance, not hearing.

Teacher's Note:
1. Ossicles and the organ of Corti take part directly in hearing.

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