🧬 Tissues – Class 9 Science MCQs

Section 4: Animal Tissues – Muscular, Nervous & HOTS (Q76–Q100)

Q76. Which tissue is responsible for movement in our body?

A. Nervous tissue
B. Connective tissue
C. Muscular tissue
D. Epithelial tissue

✅ Correct Answer: C. Muscular tissue

Explanation:

• A. Nervous → Controls movement but doesn’t perform it.
• B. Connective → Support.
• C. Correct, muscles contract & relax for movement.
• D. Epithelial → Protection/absorption.

Q77. Which type of muscle is voluntary?

A. Smooth muscle
B. Skeletal muscle
C. Cardiac muscle
D. None

✅ Correct Answer: B. Skeletal muscle

Explanation:

• A. Smooth → Involuntary.
• B. Correct, skeletal muscles are under conscious control.
• C. Cardiac → Involuntary.
• D. Wrong.

Q78. Which muscle is striated, branched, and involuntary?

A. Skeletal
B. Smooth
C. Cardiac
D. All of these

✅ Correct Answer: C. Cardiac

Explanation:

• A. Skeletal → Striated, voluntary, unbranched.
• B. Smooth → Non-striated, involuntary.
• C. Correct, cardiac muscles → striated + branched + involuntary.
• D. Wrong.

Q79. Which muscle type is spindle-shaped and non-striated?

A. Cardiac muscle
B. Skeletal muscle
C. Smooth muscle
D. None

✅ Correct Answer: C. Smooth muscle

Explanation:

• A. Cardiac → Branched, striated.
• B. Skeletal → Striated, cylindrical.
• C. Correct, smooth muscles are spindle-shaped.
• D. Wrong.

Q80. Which muscle works throughout life without fatigue?

A. Skeletal
B. Smooth
C. Cardiac
D. None

✅ Correct Answer: C. Cardiac

Explanation:

• A. Skeletal → Gets tired.
• B. Smooth → Slower but not lifelong contraction.
• C. Correct, cardiac muscles work continuously in heart.
• D. Wrong.

Q81. The structural and functional unit of nervous tissue is:

A. Axon
B. Dendrite
C. Neuron
D. Synapse

✅ Correct Answer: C. Neuron

Explanation:

• A. Axon = part of neuron.
• B. Dendrite = part of neuron.
• C. Correct, neuron = structural & functional unit.
• D. Synapse = junction.

Q82. Which part of neuron receives impulses?

A. Axon
B. Dendrites
C. Cell body
D. Myelin sheath

✅ Correct Answer: B. Dendrites

Explanation:

• A. Axon → Sends impulse away.
• B. Correct, dendrites receive impulses.
• C. Soma integrates signals.
• D. Myelin sheath → Insulation.

Q83. Which part of neuron transmits impulse to next cell?

A. Axon terminal
B. Dendrites
C. Nucleus
D. Cytoplasm

✅ Correct Answer: A. Axon terminal

Explanation:

• A. Correct, axon terminals release neurotransmitters.
• B. Receive impulse.
• C. Control center only.
• D. Cytoplasm → Support.

Q84. Which connective tissue protects brain and spinal cord?

A. Bone
B. Cartilage
C. Ligament
D. Adipose

✅ Correct Answer: A. Bone

Explanation:

• A. Correct, skull & vertebrae protect CNS.
• B. Provides cushion but not full protection.
• C. Connects bones, not protective.
• D. Fat storage.

Q85. Which muscle is multinucleated?

A. Smooth
B. Skeletal
C. Cardiac
D. None

✅ Correct Answer: B. Skeletal

Explanation:

• A. Smooth → Single nucleus.
• B. Correct, skeletal fibres are multinucleated.
• C. Cardiac → Usually single nucleus.
• D. Wrong.

Q86. Which muscle shows rhythmic contraction?

A. Skeletal
B. Smooth
C. Cardiac
D. Ligament

✅ Correct Answer: C. Cardiac

Explanation:

• A. Skeletal → Voluntary, not rhythmic.
• B. Smooth → Slow but not rhythmic.
• C. Correct, cardiac contraction is rhythmic.
• D. Wrong.

Q87. Which tissue carries messages between brain and body?

A. Muscular tissue
B. Nervous tissue
C. Connective tissue
D. Epithelial tissue

✅ Correct Answer: B. Nervous tissue

Explanation:

• A. Muscles → Movement.
• B. Correct, neurons transmit messages.
• C. Support only.
• D. Protection, not communication.

Q88. Myelin sheath around neuron is made of:

A. Fatty substance
B. Protein
C. Collagen
D. Calcium

✅ Correct Answer: A. Fatty substance

Explanation:

• A. Correct, myelin = lipid-rich insulating layer.
• B. Proteins are minor component.
• C. Found in connective tissue.
• D. In bone, not neurons.

Q89. Which part of neuron is longest?

A. Cell body
B. Dendrite
C. Axon
D. Nucleus

✅ Correct Answer: C. Axon

Explanation:

• A. Soma → Central.
• B. Short & branched.
• C. Correct, axon can be >1m (in motor neurons).
• D. Just organelle.

Q90. Nervous tissue is composed of:

A. Only neurons
B. Neurons and supporting cells
C. Only axons
D. Only dendrites

✅ Correct Answer: B. Neurons and supporting cells

Explanation:

• A. Wrong, glial cells also present.
• B. Correct, neurons + glial cells.
• C & D. Parts of neurons, not full tissue.

Q91. Which muscle is called involuntary & unstriated?

A. Skeletal
B. Smooth
C. Cardiac
D. None

✅ Correct Answer: B. Smooth

Explanation:

• A. Skeletal → Voluntary, striated.
• B. Correct, smooth = involuntary & unstriated.
• C. Cardiac → Involuntary, striated.
• D. Wrong.

Q92. Which muscle contracts fastest?

A. Skeletal
B. Smooth
C. Cardiac
D. Ligament

✅ Correct Answer: A. Skeletal

Explanation:

• A. Correct, skeletal muscles contract quickly.
• B. Smooth → Slow contraction.
• C. Cardiac → Moderate rhythmic contraction.
• D. Not a muscle.

Q93. Which animal tissue provides insulation and energy storage?

A. Cartilage
B. Adipose tissue
C. Areolar tissue
D. Ligament

✅ Correct Answer: B. Adipose tissue

Explanation:

• A. Support.
• B. Correct, adipose = fat storage, insulation.
• C. Fills spaces.
• D. Connects bones.

Q94. Reflex actions are controlled by:

A. Brain
B. Spinal cord
C. Heart
D. Cerebellum

✅ Correct Answer: B. Spinal cord

Explanation:

• A. Brain not needed for reflex.
• B. Correct, spinal cord controls reflexes.
• C. Heart pumps blood.
• D. Cerebellum = balance, not reflex.

Q95. Which tissue is responsible for peristaltic movement in food pipe?

A. Skeletal muscle
B. Smooth muscle
C. Cardiac muscle
D. Nerve tissue

✅ Correct Answer: B. Smooth muscle

Explanation:

• A. Voluntary, not in food pipe.
• B. Correct, smooth muscles produce peristalsis.
• C. Heart only.
• D. Nervous tissue coordinates but doesn’t move food.

Q96. Which muscle is found in walls of intestine?

A. Skeletal
B. Smooth
C. Cardiac
D. None

✅ Correct Answer: B. Smooth

Explanation:

• A. Skeletal = voluntary, attached to bones.
• B. Correct, smooth in intestine walls.
• C. Cardiac = heart only.
• D. Wrong.

Q97. The gap between two neurons is called:

A. Dendrite
B. Axon
C. Synapse
D. Soma

✅ Correct Answer: C. Synapse

Explanation:

• A. Receives impulse.
• B. Long fibre.
• C. Correct, synapse = junction between neurons.
• D. Cell body.

Q98. Which part of neuron carries impulse away from cell body?

A. Dendrite
B. Axon
C. Synapse
D. Soma

✅ Correct Answer: B. Axon

Explanation:

• A. Receives.
• B. Correct, axon transmits away.
• C. Junction.
• D. Integration.

Q99. Which tissue coordinates body functions by transmitting messages?

A. Muscular tissue
B. Connective tissue
C. Nervous tissue
D. Epithelial tissue

✅ Correct Answer: C. Nervous tissue

Explanation:

• A. Movement.
• B. Support.
• C. Correct, nervous tissue transmits impulses.
• D. Protection.

Q100. Which statement about cardiac muscle is true?

A. Voluntary, unbranched
B. Involuntary, striated, branched
C. Involuntary, non-striated
D. Voluntary, multinucleated

✅ Correct Answer: B. Involuntary, striated, branched

Explanation:

• A. Skeletal muscles.
• B. Correct, cardiac = involuntary + striated + branched.
• C. Smooth muscles.
• D. Skeletal muscles.

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