🧬 Tissues – Class 9 Science MCQs

Section 3: Animal Tissues – Epithelial & Connective (Q51–Q75)

Q51. Epithelial tissue covers:

A. Only internal organs
B. Only external body surface
C. Both internal and external surfaces
D. Only glands

✅ Correct Answer: C. Both internal and external surfaces

Explanation:

• A. Not only internal.
• B. Not only external.
• C. Correct, epithelium covers body surfaces, cavities & organs.
• D. Glands are epithelial, but not the only part.

Q52. The function of epithelial tissue is:

A. Protection
B. Absorption
C. Secretion
D. All of these

✅ Correct Answer: D. All of these

Explanation:

• A. Protection → Skin.
• B. Absorption → Intestine.
• C. Secretion → Glands.
• D. Correct, all functions.

Q53. Which epithelial tissue forms lining of kidney tubules?

A. Squamous epithelium
B. Cuboidal epithelium
C. Columnar epithelium
D. Ciliated epithelium

✅ Correct Answer: B. Cuboidal epithelium

Explanation:

• A. Squamous → Thin lining (alveoli).
• B. Correct, cuboidal epithelium lines kidney tubules, helps absorption & secretion.
• C. Columnar → Intestine lining.
• D. Ciliated → Respiratory tract.

Q54. Which epithelial tissue allows exchange of gases in alveoli?

A. Columnar epithelium
B. Squamous epithelium
C. Cuboidal epithelium
D. Ciliated epithelium

✅ Correct Answer: B. Squamous epithelium

Explanation:

• A. Columnar → Absorption.
• B. Correct, squamous = thin, flat for diffusion in lungs.
• C. Cuboidal → Kidney.
• D. Ciliated → Movement of mucus.

Q55. Which epithelium helps in movement of mucus in respiratory tract?

A. Columnar epithelium
B. Ciliated epithelium
C. Cuboidal epithelium
D. Glandular epithelium

✅ Correct Answer: B. Ciliated epithelium

Explanation:

• A. Columnar → Absorption.
• B. Correct, cilia beat to move mucus.
• C. Kidney tubules.
• D. Secretion in glands.

Q56. Which epithelial tissue secretes substances in glands?

A. Squamous
B. Columnar
C. Cuboidal
D. Glandular

✅ Correct Answer: D. Glandular

Explanation:

• A. Squamous → Protection.
• B. Columnar → Absorption.
• C. Cuboidal → Absorption/secretion in tubules.
• D. Correct, glandular epithelium secretes enzymes, hormones.

Q57. Which connective tissue connects muscles to bones?

A. Ligament
B. Tendon
C. Cartilage
D. Areolar

✅ Correct Answer: B. Tendon

Explanation:

• A. Ligament → Bone to bone.
• B. Correct, tendon = muscle to bone.
• C. Cartilage → Flexible support.
• D. Areolar → Fills space between organs.

Q58. Ligaments connect:

A. Muscle to bone
B. Bone to bone
C. Muscle to muscle
D. Cartilage to bone

✅ Correct Answer: B. Bone to bone

Explanation:

• A. Tendon does this.
• B. Correct, ligaments = bone to bone.
• C. Wrong.
• D. Wrong.

Q59. Which connective tissue stores fat in the body?

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

✅ Correct Answer: B. Adipose tissue

Explanation:

• A. Areolar → Fills spaces.
• B. Correct, adipose stores fat, insulates body.
• C. Cartilage → Support.
• D. Ligament → Connects bones.

Q60. Which connective tissue is found between skin and muscles?

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

✅ Correct Answer: C. Areolar tissue

Explanation:

• A. Fat storage.
• B. Cartilage = flexible support.
• C. Correct, areolar fills space between organs.
• D. Bone to bone.

Q61. Which connective tissue connects bone to muscle?

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

✅ Correct Answer: A. Tendon

Explanation:

• A. Correct, tendon = muscle to bone.
• B. Bone to bone.
• C. Support.
• D. Fat storage.

Q62. Which connective tissue is flexible but not rigid?

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

✅ Correct Answer: A. Cartilage

Explanation:

• A. Correct, cartilage = flexible support (ear, nose).
• B. Bone = rigid.
• C. Connects bones.
• D. Muscle to bone.

Q63. Which connective tissue forms the framework of our body?

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

✅ Correct Answer: B. Bone

Explanation:

• A. Flexible, not framework.
• B. Correct, bones = rigid framework.
• C. Joins bones.
• D. Fat storage.

Q64. The matrix of bone is rich in:

A. Protein and calcium salts
B. Cellulose and lignin
C. Chitin and protein
D. Lipids and proteins

✅ Correct Answer: A. Protein and calcium salts

Explanation:

• A. Correct, bone = collagen + calcium salts.
• B. Cellulose/lignin = plants.
• C. Chitin = insects.
• D. Lipids in fat, not bone.

Q65. Cartilage is found in:

A. Nose, ear, joints
B. Skin
C. Stomach
D. Brain

✅ Correct Answer: A. Nose, ear, joints

Explanation:

• A. Correct, cartilage = flexible support in these parts.
• B. Wrong.
• C. Wrong.
• D. Wrong.

Q66. Which connective tissue is non-porous, flexible, and resistant to compression?

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

✅ Correct Answer: B. Cartilage

Explanation:

• A. Ligament = joins bones.
• B. Correct, cartilage has firm but flexible matrix.
• C. Fat storage.
• D. Packing tissue.

Q67. Blood is a:

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

✅ Correct Answer: C. Connective tissue

Explanation:

• A. Covers surfaces.
• B. Movement.
• C. Correct, blood connects body parts by transport.
• D. Impulses.

Q68. Which is the fluid connective tissue?

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

✅ Correct Answer: C. Blood

Explanation:

• A. Cartilage = semi-solid.
• B. Bone = solid.
• C. Correct, blood is fluid.
• D. Ligament = fibrous.

Q69. The fluid matrix of blood is called:

A. Plasma
B. Lymph
C. Serum
D. Protoplasm

✅ Correct Answer: A. Plasma

Explanation:

• A. Correct, plasma = fluid part of blood.
• B. Lymph = separate tissue.
• C. Serum = plasma without clotting factors.
• D. Protoplasm = living content of cells.

Q70. Which connective tissue transports nutrients and oxygen?

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

✅ Correct Answer: C. Blood

Explanation:

• A, B, D = Structural roles.
• C. Correct, blood circulates nutrients & gases.

Q71. The connective tissue that drains excess tissue fluid is:

A. Blood
B. Lymph
C. Cartilage
D. Bone

✅ Correct Answer: B. Lymph

Explanation:

• A. Blood → Transport of gases/nutrients.
• B. Correct, lymph drains tissue fluid, aids immunity.
• C. Cartilage → Support.
• D. Bone → Framework.

Q72. The non-living material present in connective tissues is called:

A. Cytoplasm
B. Matrix
C. Vacuole
D. Protoplasm

✅ Correct Answer: B. Matrix

Explanation:

• A. Cytoplasm → In living cells.
• B. Correct, matrix = non-living intercellular substance.
• C. Vacuole = storage in plants.
• D. Protoplasm = living part.

Q73. Ligaments are strong but elastic because they contain:

A. Collagen only
B. Elastic fibres only
C. Both collagen and elastic fibres
D. None

✅ Correct Answer: C. Both collagen and elastic fibres

Explanation:

• A. Not only collagen.
• B. Not only elastic fibres.
• C. Correct, ligaments = collagen + elastic fibres.
• D. Wrong.

Q74. Tendons are tough and inelastic because they contain mainly:

A. Elastic fibres
B. Collagen fibres
C. Plasma
D. Fat cells

✅ Correct Answer: B. Collagen fibres

Explanation:

• A. Wrong, that’s ligaments.
• B. Correct, tendons = strong collagen fibres.
• C. Blood component.
• D. Fat storage.

Q75. Which connective tissue acts as a shock absorber in joints?

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

✅ Correct Answer: B. Cartilage

Explanation:

• A. Bone to bone connection.
• B. Correct, cartilage cushions joints.
• C. Provides framework.
• D. Insulation and storage, not shock absorption.

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