Area of the brain, most involved in maintaining the body's homeostasis, is:

  • medulla oblongata
  • cerebellum
  • pons
  • hypothalamus

Cerebral aqueduct passes through the:

  • Mid brain
  • Diencephalon
  • Hind brain
  • Spinal cord

The iris __________.

  • regulates light entrance through the pupil
  • refracts light rays
  • absorbs stray light rays
  • contains receptors for sight

Which of the following statements are true regarding
association areas of brain?

A. These are the largest areas of forebrain.

B. These are involved in the regulation of sexual
behaviour, expression of emotional reactions
and motivation.

C. These are responsible for complex functions like
intersensory association, memory and
communication.

D. It is a part of cerebral cortex.

  • A & B 

  • A, B & C

  • A, C & D 

  • A & C

Which part of the ear determines the pitch of the sound?

  • Reissner’s membrane.
  • Basilar membrane.
  • Tectorial membrane.
  • Hair cells.

Which of the following receptors are specifically responsible for maintenance of balance of body and posture ?

  •  Basilar membrane and otoliths

  •  Hair cells and organ of corti

  •  Tectorial membrane and macula

  •  Crista ampullaris and macula

Match the following columns and select the correct option

              Column - I            Column - II

(a) The organ of Corti      (i) Connects the middle ear and pharynx

(b) Cochlea                    (ii) Coiled part of the labyrinth

(c) Eustachian tube        (iii) Attached to the oval window

(d) Stapes                     (iv)Located on the basilar membrane

     (a)  (b)  (c)  (d)

  •   (iii)  (i)  (iv)  (ii)

  •   (iv)  (ii)  (i)  (iii)

  •   (i)   (ii)  (iv)  (iii)

  •   (ii)  (iii)  (i)  (iv)

Match the following columns and select the correct option :

       Column - I          Column - II

(a) Rods and          (i) Absence of Cones photoreceptor cells

(b) Blind Spot        (ii) Cones are densely packed

(c) Fovea              (iii) Photoreceptor cells

(d) Iris                 (iv) Visible coloured portion of the eye

  • (a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)

  • (a)-(ii), (b)-(iii), (c)-(i), (d)-(iv)

  • (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)

  • (a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)

Highly vascular and closely investing protective coat around the brain is known as

 

  •   Arachnoid 

  •   Pia mater

  •   Dura mater

  •   Sub-arachnoid space

All of the following are parts of the forebrain, except  

 

  •   Cerebellum

  •   Corpus callosum

  •   Association areas

  •   Hypothalamus

The limbic system is formed by

  •   The hypothalamus, epithalamus, amygdala and hippocampus

  •   Hypothalamus, amygdala and hippocampus

  •   Corpora quadrigemina and hippocampus

  •   Midbrain an hindbrain 

The part of the human brain located between the thalamus/hypothalamus and pons is

  •   Forebrain

  •   Midbrain

  •   Hindbrain

  •   Vestibular apparatus 

The canal passing through the midbrain is called

 

  •   Medulla oblongata

  •   Cerebral aqueduct

  •   Eustachian tube

  •   Aqueous chamber

The vomiting centre is situated in

  •   Cerebrum

  •   Cerebellum

  •   Medulla

  •   Hypothalamus 

Which of the following meninges is in contact with the brain tissue?

  •   Dura mater

  •   Arachnoid

  •   Pia mater

  •   No meninx is in contact with the brain tissue

Read the following given statements and choose the correct option w.r.t. mechanism of vision.
Statement A: The light rays in visible wavelength focussed on the retina through the cornea and lens generate potentials in rods and cones. Statement B: The image formed on the retina is recognised based on the earlier memory and experience.

  • Both statements are correct

  • Both statements are incorrect

  • Only statement A is correct

  • Only statement B is correct

 In a resting membrane , K+ passively moves from 
  • Axoplasm to ECF by diffusion 
  • ECF to axoplasm by diffusion 
  • Axoplasm to ECF by gated channels 
  • ECF to axoplasm by gated channels
 Which of the given meninges is in contact with brain tissue ? 
  • Piamater 
  • Arachnoid 
  • Dura matar 
  • Pia-arachnoid 
 Basilar membrane is in contact above and below with which fluid respectively ? 
    Below                    Above 
  • Endolymph           Perilymph 
  • Perilymph             Perilymph 
  • Endolymph            Endolymph 
  • Perilymph               Endolymph   
Transport of sodium and potassium ions across axonal membrane:
 
  • is active through sodium-potassium pump and passive through sodium and potassium channels
  • is active through both sodium-potassium pump through sodium and potassium channels
  • is passive through both sodium-potassium pump through sodium and potassium channels
  • is passive through sodium-potassium pump and active through sodium and potassium channels
Medulla oblongata:
I. is a part of the brain stem
II. is a part of the hind brain
III. is a part of the limbic system
 
  • Only I and II
  • Only I and III
  • Only II and III
  • I, II and III
Identify A, B, C and D in the diagrammatic representation of reflex action, showing knee jerk reflex:
A B C D
1. Muscle spindle Motor end plate Afferent pathway Efferent pathway
2. Muscle spindle Motor end plate Efferent pathway Afferent pathway
3 Motor end plate Muscle spindle Efferent pathway Afferent pathway
4. Motor end plate Muscle spindle Afferent pathway Efferent pathway
  • 4
  • 1
  • 2
  • 3
Regarding the given diagram showing parts of an eye, identify the incorrect match:
1. A Major refractory surface
2. B Accommodation
3. C Regulates diameter of pupil
4. D Point of highest visual acuity
  • 1
  • 2
  • 3
  • 4
Consider the given two statements:
I. In a neuron, Nissl’s granules are present in dendrites as well as cell body
II. Unmyelinated neurons in peripheral neural system are not enclosed by a Schwann cell
  • Only I is correct
  • Only II is correct
  • Both I and II are correct
  • Both I and II are incorrect
Which structure enables the communication between the left and right cerebral hemispheres in the human brain?
  • Foramen of Monroe
  • Cerebral aqueduct of Sylvius
  • Corpus callosum
  • Cerebellar peduncles
In the human eye:
  • the choroid is avascular
  • lens is held in place by ligaments attached to the ciliary body
  • photopic vision and colour perception is a function of rods
  • aqueous humor has a gel-like consistency
Identify the incorrectly matched pair
1. Medulla oblongata Gastric secretions
2. Hypothalamus Control of body temperature
3. Limbic system Behaviour
4. Association areas Purely sensory areas in cerebrum
  • 1
  • 2
  • 3
  • 4
0:0:1


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Practice Zoology Quiz Questions and Answers