Vidaara.orgClass 11 · Mathematics
CodeVID-M11-WS
Neural Control and Coordination — Practice Worksheet
Name: ____________________
Roll No.: __________
Date: ____________
General Instructions
- All questions are compulsory.
- Choose the correct option (A, B, C or D) for each question.
- The answer key is at the end — try the paper first!
Section A — Multiple Choice (1 mark each)
15 × 1 = 15 marks
1.
Rapid coordination in the body using electrical signals is done by the:
- A.Endocrine system
- B.Nervous system
- C.Digestive system
- D.Excretory system
2.
The basic unit of the nervous system is the:
- A.Neuron
- B.Nephron
- C.Sarcomere
- D.Alveolus
3.
The long fibre of a neuron that carries the signal away is the:
- A.Dendrite
- B.Axon
- C.Cyton
- D.Synapse
4.
The message that travels along a neuron is a/an:
- A.Hormone
- B.Nerve impulse (electrical signal)
- C.Enzyme
- D.Blood cell
5.
The gap between two neurons is the:
- A.Axon
- B.Synapse
- C.Dendrite
- D.Nerve
6.
Chemicals that carry the signal across a synapse are:
- A.Hormones
- B.Neurotransmitters
- C.Enzymes
- D.Vitamins
7.
The brain and spinal cord together form the:
- A.Peripheral nervous system
- B.Central nervous system
- C.Endocrine system
- D.Sense organs
8.
The largest, thinking part of the brain is the:
- A.Cerebellum
- B.Cerebrum
- C.Medulla
- D.Spinal cord
9.
Balance and coordination of movement are controlled by the:
- A.Cerebrum
- B.Cerebellum
- C.Medulla
- D.Retina
10.
Involuntary actions like heartbeat and breathing are controlled by the:
- A.Cerebrum
- B.Cerebellum
- C.Medulla oblongata
- D.Cornea
11.
A quick automatic response such as pulling the hand from a hot object is a:
- A.Reflex action
- B.Voluntary action
- C.Hormonal action
- D.Memory
12.
The correct order of the reflex arc is:
- A.Receptor → sensory neuron → spinal cord → motor neuron → effector
- B.Effector → motor neuron → brain
- C.Brain → receptor → muscle
- D.Muscle → sensory neuron → skin
13.
The eye detects:
- A.Sound
- B.Light
- C.Smell
- D.Taste
14.
The cochlea, important for hearing, is found in the:
- A.Eye
- B.Ear
- C.Nose
- D.Tongue
15.
Touch, pressure, pain and temperature are detected by the:
- A.Skin
- B.Tongue
- C.Eye
- D.Ear
Section B — Challenge / Olympiad (2 marks each)
6 × 2 = 12 marks
16.
Impulses pass across a synapse in one direction only because neurotransmitters are released from:
- A.One side and received on the other
- B.Both sides equally
- C.The muscle only
- D.The bone
17.
A reflex action is faster than a normal voluntary action mainly because the decision is made by the:
- A.Spinal cord, not the brain
- B.Cerebrum
- C.Skin
- D.Heart
18.
Damage to the cerebellum would most likely affect a person's:
- A.Balance and coordinated movement
- B.Heartbeat
- C.Digestion
- D.Memory of facts only
19.
Reading a book and then deciding to turn the page is a voluntary action controlled mainly by the:
- A.Cerebrum
- B.Medulla
- C.Spinal cord alone
- D.Cerebellum only
20.
When you enter a dim room, the pupil widens. This adjustment of light entering the eye is controlled by the:
- A.Iris
- B.Retina
- C.Optic nerve
- D.Cornea
21.
Constant exposure to very loud noise can harm hearing because it can damage the receptors in the:
- A.Cochlea of the inner ear
- B.Retina
- C.Taste buds
- D.Skin
Answer Key
Section A — Multiple Choice (1 mark each)
- (B) Nervous system
- (A) Neuron
- (B) Axon
- (B) Nerve impulse (electrical signal)
- (B) Synapse
- (B) Neurotransmitters
- (B) Central nervous system
- (B) Cerebrum
- (B) Cerebellum
- (C) Medulla oblongata
- (A) Reflex action
- (A) Receptor → sensory neuron → spinal cord → motor neuron → effector
- (B) Light
- (B) Ear
- (A) Skin
Section B — Challenge / Olympiad (2 marks each)
- (A) One side and received on the other
- (A) Spinal cord, not the brain
- (A) Balance and coordinated movement
- (A) Cerebrum
- (A) Iris
- (A) Cochlea of the inner ear
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