Biology

Animal Tissue and Anatomy

1,715 Questions

Test your knowledge of animal tissues and anatomical structures with these practice questions. The set covers human organs, reproductive systems, and sensory receptors. These fundamental biology topics frequently appear in medical and competitive examinations.

Sensory receptorsReproductive organsBody structure frameworkEar drum pressureExcretory system

Animal Tissue and Anatomy Questions

Multiple choice biology sensory organs of humans - sense organs ear : the organ of hearing and equilibrium ear and its function ear

Receptor cells for balancing occur in human ear in

  1. Malleus, incus and stapes

  2. Utriculus, sacculus and semicircular canals

  3. Organ of Corti

  4. Eustachian tube
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
In humans, balance is maintained by vestibular apparatus in inner ear which contain specific receptors called crista and macula. Crista is a projecting ridge of ampulla of semi-circular canals. Macula is a projecting ridge of saccule and utricle (or sacculus and utriculus) which are otolith organs in vestibular apparatus.
So, the correct answer is 'Utriculus, sacculus and semicircular canals'.
Multiple choice biology sensory organs of humans - sense organs ear : the organ of hearing and equilibrium ear and its function ear

Pressure is maintained on two sides of ear drum by

  1. Auditory ossicles

  2. Membranous labyrinth

  3. Eustachian tube

  4. Cochlea
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Eustachian tube connects middle ear with the pharynx. It maintains pressure between middle ear and atmosphere and thus, equalizes pressure on two sides of ear drum. Eustachian tube is closed for most of the time and opens during certain activities like chewing, swallowing so that the air can pass between middle ear and pharynx. When there is a change in atmospheric pressure, a sudden feeling of blockage is observed and these activities can lead to opening of eustachian tube so that the pressure can be equalized within the middle ear.
So, the correct answer is 'Eustachian tube'. 
Multiple choice biology sensory organs of humans - sense organs ear : the organ of hearing and equilibrium ear and its function ear

Correct sequence of regions in organisation of auditory mechanoreceptor organ is

  1. Pinna - Tympanic membrane - Auditory canal - Cochlea - Malleus - Incus - Stapes - Auditory nerve

  2. Pinna - Malleus - Incus - Stapes - Auditory canal - Tympanic membrane - Cochlea - Auditory nerve

  3. Pinna - Auditory canal - Tympanic membrane - Malleus - Incus - Stapes - Cochlea - Auditory nerve

  4. Pinna - Cochlea - Tympanic membrane - Auditory membrane - Auditory canal - Incus - Malleus - Stapes - Cochlea - Auditory nerve

  5. Pinna - Tympanic membrane - Auditory canal - Incus - Malleus - Stapes - Cochlea - Auditory nerve.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

  • The outermost part of human ear is called pinna (external ear).
  • Pinna is followed by auditory canal. It is a tube by which pinna is connected to middle ear.
  • The auditory canal extends from pinna to tympanic membrane (ear drum).
  • Tympanic membrane is followed by three ear ossicles, malleus, incus and stapes.
  • Stapes is attached to oval window of cochlea and transfers the vibrations to the fluid of cochlea. Cochlea is a part of inner ear.
  • Inner ear contains vestibular apparatus and auditory nerve along with cochlea.
So, the correct answer is 'Pinna - Auditory canal - Tympanic membrane - Malleus - Incus - Stapes - Cochlea - Auditory nerve'.

Multiple choice biology sensory organs of humans - sense organs ear : the organ of hearing and equilibrium ear and its function ear

Specific receptors responsible for the balance of the body and posture are __________.

  1. Organ and Corti

  2. Crista and macula

  3. Basilar membrane

  4. Tectorial membrane
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Crista is a projecting ridge of ampulla which is the swollen base of bony canal in inner ear. Macula is a projecting ridge of saccule and utricle which are otolith organs in vestibular apparatus of inner ear. Crista and macula are specific receptors of vestibular apparatus that are responsible for maintaining balance of body and posture.
So, the correct answer is 'Crista and macula'.
Multiple choice biology sensory organs of humans - sense organs ear : the organ of hearing and equilibrium ear and its function ear

Which one is used in balancing?

  1. Organ of Corti

  2. Vestibular region

  3. Middle ear

  4. Cochlea
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Vestibular region or vestibular apparatus is a complex system present in the inner ear. It consists of three semi-circular canals and a otolith organ that contains saccule and utricle having a projecting ridge called macula. The bony canals contain perilymph and surrounds membranous canals. The base of canals is swollen and known as ampulla that contains a projecting ridge called crista ampullaris possessing hair cells. Crista and macula are the receptors of vestibular apparatus which are responsible to maintaining balance and posture of body.
So, the correct answer is 'Vestibular region'.
Multiple choice biology sensory organs of humans - sense organs ear : the organ of hearing and equilibrium ear and its function ear

The balancing organ of ear is

  1. Lagena and Sacculus

  2. Semicircular canal and Utriculus

  3. Semicircular canal and Ossicles

  4. Otolith and Lagena
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The vestibular system, which is responsible for balance, consists of the semicircular canals and the otolith organs, which include the utriculus and sacculus.

Multiple choice biology sensory organs of humans - sense organs ear : the organ of hearing and equilibrium ear and its function ear

Membranous labyrinth is concerned with

  1. Sensing

  2. Hearing with balancing

  3. vagus nerve

  4. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The functional components of the membranous labyrinth involved in the sensations of static and dynamic equilibrium are a system of thin walled, intercommunicating tubes and ducts situated within the petrous part of the temporal bone at the base of the skull. There are five vestibular structures, each containing a specialized mechanoreceptor, (maculae), within the utricle and saccule, and cristae within the ampulla of the superior, horizontal, and posterior semicircular canals.

Multiple choice biology sensory organs of humans - sense organs ear : the organ of hearing and equilibrium ear and its function ear

Which organ in our body acts as dual receptor?

  1. Nose

  2. Ear

  3. Tongue

  4. Eye
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ear acts as the dual receptor in the following ways:

  1. the cochlea contains the organs of Corti which receive the mechanical sound waves and converts them into hearing impulse. 
  2. the vestibular apparatus contains the semicircular canals that sense the dynamic balance position and the utricle and saccule sense the static balance of the body.
A. Nose is an olfactory (smell) receptor.
B. Ear is both sound and balance receptor.
C. Tongue has taste receptors.
D. Eye has photoreceptors.
Hence, the correct answer is 'Ear'

Multiple choice biology sensory organs of humans - sense organs ear : the organ of hearing and equilibrium ear and its function ear

Which structure helps a person to maintain equilibrium? 

  1. Cochlea

  2. Eustachian tube

  3. Semicircular canals

  4. Hammer like bone
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The semicircular canals are three canals used to provide information to the brain on directional balance. Each canal is lined with cilia and filled with fluid, called as endolymph. As the head and body move, the fluid moves and pushes the cilia back and forth to create a motion sensor. The three main parts of the semicircular canals are the horizontal, posterior and superior. The superior is responsible for head rotation, the posterior canal detects movement and rotation on the sagittal plane, and the horizontal senses on a vertical basis.

Multiple choice biology sensory organs of humans - sense organs ear : the organ of hearing and equilibrium ear and its function ear

Which one of the following is correct?

  1. Semicircular canal- Balancing

  2. Cochlea- Hearing

  3. Utriculus and sacculus- Balancing

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • Semicircular canals are three tiny fluid-filled tube in our inner ear that helps to keep our balance.
  • Cochlea transforms the sound or vibration of cochlear liquid into neural signals.
  • Utriculus and Sacculus are part of balancing apparatus of ear located within the vestibule of the bony labyrinth which respond to change in the position of the head with respect to gravity (linear acceleration).
Multiple choice biology sensory organs of humans - sense organs ear : the organ of hearing and equilibrium ear and its function ear

Which structure helps a person to maintain his equilibrium?

  1. Cochlea

  2. Hammer

  3. Semicircular canals

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A semicircular canal or a semicircular duct is one of three semicircular, interconnected tubes located inside each ear. The three canals are the horizontal semicircular canal (also known as the lateral semicircular canal),     superior semicircular canal (also known as the anterior semicircular canal)     and the posterior semicircular canal (also known as the inferior semicircular canal).
It helps in regulating body balance. Endolymph, which is present in the ear plays a major role in regulating body balance.

Multiple choice zoology excretory system of human structure of nephron excretory system nephron

Macula densa is found in

  1. Internal ear

  2. Kidney

  3. Liver

  4. Spleen
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Macula densa is found in the kidney. The nephron is the structural and functional unit of the kidney. Nephron has the following parts: Glomerulus, proximal convoluted tubule, the loop of Henle, distal convoluted tubule and collecting duct. Macula densa is the thickening where the distal tubule touches the afferent arteriole of the glomerulus.
So, the correct answer is 'Kidney'.
Multiple choice general knowledge resources of india and world animal husbandry and fishery green and white revolution agriculture in indian economy

The state of inactivity adopted by desert animals during the hottest and driest season is known as __________.

  1. basal metabolism

  2. dormancy

  3. aestivation

  4. hibernation
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Aestivation is a state of animal dormancy characterized by inactivity and a lowered metabolic rate in response to high temperatures and arid conditions.

Multiple choice biology food for health fats fats and their test different nutrients in food

Assertion  :Cold blooded animals have no fat layer


Reason  :  Cold blooded animals use their fat for
                   metabolic process during hibernation.




  1. If both the assertion and the reason are true and the reason

    is a correct explanation of the assertion

  2. If both the assertion and reason are true but the reason is

    not a correct explanation of the assertion

  3. If the assertion is true but the reason is false

  4. If both the assertion and reason are false

  5. If the assertion is false but reason is true
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The body temperature in cold blooded varies with that of the environment as there is no fat deposition. On the other hand, cold blooded animals use fat during hibernation to carry out their metabolic processes.