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11th Biology Weekly Test - 3 ( Bio - Zoology - Neural Control and Coordination )

MABS Institution

11th Biology Weekly Test - 3 ( Bio - Zoology - Neural Control and Coordination )-Aug 2020

Time : 1.00 Hours

Part - A

Multiple Choice Question - Answer All Question

Cerebral cortex appears grey due to presence of_________.

Myelinated neurons
Unmyelinated neurons
Multipolar neurons
Bipolar neurons

_______________ is the coloured portion of the eye.

Cornea
Iris
Pupil
Sclera

Examine the diagram of the two cell types A and B given below and select the correct option.

Cell-A is the rod cell found evenly all over retina
Cell-A is the cone cell more concentrated in the fovea centralis
Cell-B is concerned with colour vision in bright light
Cell-A is sensitive to bright light intensities

When the potential across the axon membrane Is more negative than the normal resting potential, the neuron is said to be in a state of

Depolarization
Hyperpolarization
Repolarization
Hypopolarization

_____________ in the skin act as thermoreceptors.

Krause end bulbs
Meissner's corpuscles
Ruffini endings
Merkel disc

In a adult about ___________ ml of CSF is formed daily.

250ml
150ml
500ml
500ml

How many ear ossicles?

2
3
4
5

_______is also called voluntary neural system.

Autonomic neural system
Somatic neural system
Sympathetic neural system
Para sympathetic neural system

Match the following:

A. Malleus i. Stirrup bone

B. Scala media ii. Anvil bone

C. Incus iii. Hammer bone

D. Stapes iv. Endolymph

A B C D

iii iv ii i
A B C D

i ii iii iv
A B C D

iii ii i iv
A B C D

iv i iii ii

___________ are involved in olfactory reflexes and emotional responses to odour.

Hypothalamus
Epithalamus
Infundibulum
Mammillary bodies

Which is called the emotional brain?

Peripheral nervous system
Autonomic nervous system
Limbic system
Hypothalamus

Which structure in the ear converts pressure waves to action potentials?

Tympanic membrane
Organ of Corti
Oval window
Semicircular canal

Pick out the gland which is found in the ear

Ceruminous glands
Lachrymal gland
Ciliary gland
Salivary gland

The longest axons in the body.are those of the _________nerve.

Cranial
Sciatic
Vagus
Trochlear

The ________ lobe of the cerebrum controls visual processing.

Parietal
Frontal
Occipital
Temporal

___________ is a membrane associated with the eye.

Tectorial membrane
Basilar membrane
Conjunctiva
Reisner's membrane

Identify the wrong statement.

Spinal cord is a nervous tissue.
It has grey matter outside and white matter inside in contrast to the brain.
The nerve fibres form ascending and descending tracts in the spinal cord.
The spinal cord shows two enlargements

____________ is called the emotional brain.

Peripheral nervous system
Autonomic nervous system
Limbic system
Hypothalamus

Mechanoreceptors are seen in________

Tongue
Skin
Cochlea
Eye

The rotation of the eye ball is the function of ____________ nerve.

facial
abducens
trochlear
trigeminal

Mechanoreceptors are seen in ________

Tongue
Skin
Cochlea
Eye

There are ____ear ossicles.

2
3
4
5

Pick out the gland which is found in the ear

Ceruminous glands
Lachrymal gland
Ciliary gland
Salivary gland

Which of the following statement concerning the somatic division of the peripheral neural system is incorrect?

Its pathways innervate skeletal muscles
Its pathways are usually voluntary
Some of its pathways are referred to as reflex arcs
Its pathways always involve four neurons

_________is a membrane associated with the eye.

Tectorial membrane
Basilar membrane
Conjunctiva
Reisner's membrane

The olfactory receptor cells are_________shaped.

pin
flask
egg
pyramid

The ________________ in the body are replaced every 7-10 days.

RBC
Ruffini endings
Taste bud cells
Cones

Irregular curvature of cornea or lens causes ___________

Cataract
Presbyopia
Astigmatism
Myopia

_______in the skin act as thermoreceptors.

Krause end bulbs
Meissner's corpuscles
Ruffini endings
Merkel disc

_________are egg shaped receptors seen in the skin.

Meissner's corpuscles
Ruffini endings
Pacinian corpuscles
Hair follicle receptors

The abundant intracellular cation is

H⁺
K⁺
Na⁺
Ca⁺⁺

Assertion (A): The inner ear acts as an organ of balance.
Reason (R): It contains the ear ossicles.

A and R are wrong
R explains A
A and R are right but R does not explain A
A is right, R is wrong

______is the coloured portion of the eye.

Cornea
Iris
Pupil
Sclera

Irregular curvature of cornea or lens causes_________

Cataract
Presbyopia
Astigmatism
Myopia

________contains vital centres that control cardio vascular reflexes and respiration.

Cerebrum
Pons
Medulla
Cerebellum

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