Structural Organisation in Animals

NEET Biology · 93 questions · Page 9 of 10 · Click an option or "Show Solution" to reveal answer

Q81

Areolar connective tissue joins

A Bones with muscles

B Bones with bones

C Fat body with muscles

D Integument with muscles

Correct Answer

Option D

Solution

Areolar connective tissue joins skin (integument) with muscles, nerves and blood vessels.

Q82

Mast cells secrete

A Histamine

B Hippurin

C Haemoglobin

D Myoglobin

Correct Answer

Option A

Solution

Mast cell granules contain histamine (vasodilator) and heparin (anticoagulant).

Q83

Which cells are least likely to be replaced by new cells after injury?

A Malpighian layer of the skin

B Osteocytes

C Neurons

D Liver cells

Correct Answer

Option C

Solution

Neurons cannot divide and are least likely to be replaced after damage.

Q84

Mast cells of connective tissue contain

A Heparin and calcitonin

B Heparin and histamine

C Vasopressin and relaxin

D Serotonin and melanin

Correct Answer

Option B

Solution

Mast cells contain heparin (anticoagulant) and histamine (vasodilator).

Q85

Which one of the following contains the largest quantity of extracellular material?

A Stratified epithelium

B Myelinated nerve fibres

C Striated muscle

D Areolar tissue

Correct Answer

Option D

Solution

Areolar tissue has the most intercellular space and extracellular material among the options.

Q86

Melanin protects from

A Infrared rays

B U.V. rays

C Visible rays

D X-rays

Correct Answer

Option B

Solution

Melanin in skin protects from harmful ultraviolet rays.

Q87

Collagen is

A Globular protein

B Fibrous protein

C Carbohydrate

D Lipid

Correct Answer

Option B

Solution

Collagen is a fibrous protein occurring as white fibres produced by fibroblasts in connective tissue.

Q88

Which cells do not form a layer and remain structurally separate?

A Nerve cells

B Epithelial cells

C Gland cells

D Muscle cells

Correct Answer

Option A

Solution

Nerve cells are structural and functional units of nervous tissue, they do not form layers.

Q89

During an injury, nasal septum gets damaged. Which cartilage is preferred for recovery?

A Fibrous cartilage

B Elastic cartilage

C Calcified cartilage

D Hyaline cartilage

Correct Answer

Option D

Solution

Hyaline cartilage has a clear matrix and is present in the nose. Used for nasal septum recovery.

Q90

Which pair is correct?

A Sebum = sexual attraction

B Saliva = sense of food taste

C Sweat = temperature regulation

D Humerus = Hind leg

Correct Answer

Option C

Solution

Sweat from sweat glands of the skin helps in temperature regulation.

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