MERIT YARD

Class 11th Biology - Neural Control and Coordination - MERIT YARD

Question 1 / 40Which of the following maintains the resting potential of a neuron?

A) Diffusion

B) Osmosis

C) Filtration

D) Sodium-Potassium Pump

Question 2 / 40Visual acuity (sharpness) is highest at:

A) Blind spot

B) Pupil

C) Sclera

D) Fovea centralis

Question 3 / 40The Eustachian tube connects the middle ear with the:

A) Larynx

B) Pharynx

C) External ear

D) Inner ear

Question 4 / 40Which part of the brain is responsible for balance and posture?

A) Cerebrum

B) Thalamus

C) Cerebellum

D) Medulla

Question 5 / 40The microscopic gap between two neurons is called:

A) Cyton

B) Axon hillock

C) Nodes of Ranvier

D) Synapse

Question 6 / 40Myelin sheath is produced by Schwann cells and:

A) Oligodendrocytes

B) Osteocytes

C) Astrocytes

D) Nephrocytes

Question 7 / 40Organ of Corti is located on which membrane?

A) Reissner’s membrane

B) Tectorial membrane

C) Basilar membrane

D) Tympanic membrane

Question 8 / 40The photosensitive pigment in rods is:

A) Iodopsin

B) Rhodopsin

C) Melanin

D) Bilirubin

Question 9 / 40Unipolar neurons are usually found in the:

A) Embryonic stage

B) Retina of eye

C) Cerebral cortex

D) Spinal cord

Question 10 / 40Which of the following is the 'Master Control' of body temperature?

A) Thalamus

B) Pons

C) Cerebrum

D) Hypothalamus

Question 11 / 40Corpus callosum connects two:

A) Cerebral hemispheres

B) Optic lobes

C) Cerebellar hemispheres

D) Spinal nerves

Question 12 / 40The space between the cornea and the lens is filled with:

A) Vitreous humor

B) Plasma

C) Aqueous humor

D) CSF

Question 13 / 40Smallest bone of the human body found in the ear:

A) Malleus

B) Incus

C) Stapes

D) Patella

Question 14 / 40Nerve impulse conduction is a ________ process.

A) Purely chemical

B) Purely physical

C) Electro-chemical

D) Biological only

Question 15 / 40Which layer of the eyeball is vascular and bluish in color?

A) Sclera

B) Choroid

C) Retina

D) Cornea

Question 16 / 40Reflex action is controlled by:

A) Spinal cord

B) Cerebrum

C) Cerebellum

D) Medulla

Question 17 / 40The colored part of the eye is:

A) Retina

B) Pupil

C) Iris

D) Lens

Question 18 / 40Bipolar neurons are found in:

A) Cerebral cortex

B) Retina of eye

C) Embryo

D) Spinal cord

Question 19 / 40The unit of the nervous system is:

A) Neuron

B) Nephron

C) Axon

D) Dendrite

Question 20 / 40Which area of the brain contains the 'Respiratory Rhythm Center'?

A) Cerebellum

B) Medulla oblongata

C) Thalamus

D) Pons

Question 21 / 40The fluid present in the scala media of cochlea is:

A) Perilymph

B) Plasma

C) Lymph

D) Endolymph

Question 22 / 40Nissl's granules are made up of:

A) DNA

B) Ribosomes and RER

C) Mitochondria

D) Golgi bodies

Question 23 / 40The brain stem consists of midbrain, medulla and:

A) Pons

B) Cerebellum

C) Cerebrum

D) Thalamus

Question 24 / 40Gap between two myelin sheaths is called:

A) Synapse

B) Dendrite

C) Node of Ranvier

D) Axon Hillock

Question 25 / 40Night blindness is due to deficiency of:

A) Vitamin A

B) Vitamin B

C) Vitamin C

D) Vitamin D

Question 26 / 40The transparent front part of the sclera is:

A) Retina

B) Iris

C) Pupil

D) Cornea

Question 27 / 40Action potential is triggered by the influx of:

A) Na+ ions

B) K+ ions

C) Ca++ ions

D) Cl- ions

Question 28 / 40Balance of the body is maintained by:

A) Cerebrum

B) Cochlea

C) Eustachian tube

D) Vestibular apparatus

Question 29 / 40Limbic system is also called:

A) Thinking brain

B) Emotional brain

C) Hindbrain

D) Midbrain

Question 30 / 40The canal through which CSF flows in the spinal cord is:

A) Central canal

B) Cerebral aqueduct

C) Foramen magnum

D) Ventricle

Question 31 / 40Which of the following bone is known as 'Stirrup'?

A) Malleus

B) Incus

C) Femur

D) Stapes

Question 32 / 40Blind spot is the region where:

A) Cones are densely packed

B) Image is very clear

C) Photoreceptor cells are absent

D) Only rods are present

Question 33 / 40Cerebral cortex is made of:

A) Grey matter

B) White matter

C) Myelin

D) Bones

Question 34 / 40Hormone that controls Sleep-Wake cycle is produced by:

A) Thyroid

B) Pineal gland

C) Adrenal

D) Thymus

Question 35 / 40Vitreous chamber is found between:

A) Cornea and Lens

B) Lens and Retina

C) Sclera and Choroid

D) Iris and Pupil

Question 36 / 40A neurotransmitter is released from:

A) Dendrites

B) Cyton

C) Synaptic vesicles

D) Nucleus

Question 37 / 40The coiled portion of the labyrinth is:

A) Vestibule

B) Semicircular canal

C) Cochlea

D) Incus

Question 38 / 40The largest part of the human brain is:

A) Cerebrum

B) Cerebellum

C) Medulla

D) Thalamus

Question 39 / 40Association areas are found in:

A) Cerebral cortex

B) Cerebellum

C) Spinal cord

D) Midbrain

Question 40 / 40The opening in the center of the iris is:

A) Lens

B) Fovea

C) Cornea

D) Pupil