CBSE Class 11 Biology Neural Control and Coordination Worksheet Set 01

MULTIPLE CHOICE QUESTIONS

Question. Sensation of stomach pain is due to 
(a) interoceptors
(b) exteroceptors
(c) teloreceptors
(d) all of these
Answer. A

Question. Which is the example of conditioned reflex ?
(a) Eyes closed when anything enter into it.
(b) Hand took up when piercing with needle.
(c) Salivation in a hungry dog in response to ringing of a bell.
(d) Digestion food goes forward in alimentary canal.
Answer. C

Question. Excessive stimulation of vagus nerve in humans may lead to 
(a) hoarse voice
(b) peptic ulcers
(c) efficient digestion of proteins
(d) irregular contraction of diaphragm
Answer. D

Question. A person is wearing spectacles with concave lenses for correcting vision. While not using the glasses, the image of a distant object in his case will be formed
(a) on the blind spot
(b) behind the retina
(c) in front of the retina
(d) on the yellow spot
Answer. C

Question.Unidirectional transmission of a nerve impulse through nerve fibre is due to the fact that
(a) nerve fibre is insulated by a medullary sheath.
(b) sodium pump starts operating only at the cyton and then continues into the nerve fibre.
(c) neurotransmitters are released by dendrites and not by axon endings.
(d) neurotransmitters are released by the axon endings and not by dendrites.
Answer. D

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

(a) Cell A is the rod cell found evenly all over retina.
(b) Cell A is the cone cell more concentrated in the fovea centralis.
(c) Cell B is concerned with colour vision in bright light.
(d) Cell A is sensitive to low light intensities.
Answer. B

Question. A person, who shows unpredictable moods, outbursts of emotion, quarrelsome behaviour and conflicts with others, is suffering from
(a) borderline personality disorder (BPD)
(b) mood disorder
(c) addictive disorder
(d) schizophrenia
Answer. A

Question. Which of the following is an eye disease?
(a) hepatitis
(b) measles
(c) glaucoma
(d) bronchitis
Answer. C

Question. Given below is a table comparing the effects of sympathetic and parasympathetic nervous system for four features (1-4).
Which one feature is correctly described?

Answer. B

Question. The black pigment in the eye which reduces the internal reflection is located in 
(a) retina
(b) iris
(c) cornea
(d) sclerotic
Answer. A

Question. Bipolar nerve cells are present in
(a) Skin tactile corpuscles
(b) Spinal cord
(c) Retina of eye
(d) All the above
Answer. C

Question. Which of the following ions are required for nerve conduction ? 
(a) Ca++, Na+ and K+
(b) Ca++ and Mg++
(c) Mg++ and K+
(d) Na+ and K+
Answer. A

Question. The following diagram indicates the reflex arc.
Identify the parts labelled as A, B, C, D, E, F and G. Choose the correct option

(a) A = sense organ; B = sensory nerve;
C = dorsal horn;
D = interneuron; E = ventral horn;
F = motor nerve; G = effector
(b) A = sense organ; B = sensory nerve;
C = ventral horn;
D = interneuron; E = dorsal horn;
F = motor nerve; G = effector
(c) A = effector; B = motor nerve;
C = dorsal horn;
D = interneuron; E = ventral horn;
F = sensory nerve; G = effector
(d) A = effector; B = motor nerve;
C = ventral horn; D = interneuron;
E = dorsal horn; F = sensory nerve;
G = sense organ.
Answer. A

ASSERTION REASON QUESTIONS 

Directions  : Each of these questions contains an Assertion followed by Reason. Read them carefully and answer the question on the basis of following options. You have to select the one that best describes the two statements.
(a) If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
(b) If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
(c) If Assertion is correct but Reason is incorrect.
(d) If both the Assertion and Reason are incorrect.

Question. Assertion : The brain stem contains centres for controlling activities.
Reason : Brain stem is very sensitive. 
Answer. B

Question. Assertion : The chemical stored in the synaptic vesicles are termed as neurotransmitters.
Reason : Synaptic vesicles release these chemicals in the synaptic cleft.
Answer. B

Question. Assertion: The imbalance in concentration of Na+, K+ and proteins generates resting potential.
Reason: To maintain the unequal distribution of Na+ & K+, the neurons use electrical energy.
Answer. C

Question. Assertion : The axonal membrane of the neuron is more permeable to sodium ion (Na+) and nearly impermeable to potassium (K+).
Reason : In a resting state neuron does not conduct any impulse. 
Answer. D

Question. Assertion : A cerebellum is related with skillful voluntary movement and involuntary activity like body balance, equilibrium, etc.
Reason : It is part of hind brain and it is situated behind the pons.
Answer. B