Biology - Mock Test 285

Question 2841

After complete exhalation the lungs of a healthy man contains a liter of gas, this quantity is known. as?

A) Residual volume B) Functional residual capacity C) Total lung capacity D) Dead space

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Question 2842

Tidal volume of air in a normal healthy man during inspiration is about?

A) 300-400 ml B) 500-700 ml C) 900-1000 ml D) 100-250 ml

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Question 2843

The exchange of gases in a mammal takes place is?

A) trachea B) Bronchioles C) Bronchi D) Alveoli

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On the bronchioles are alveoli, where gas exchange takes place. These alveoli greatly increase the surface area:volume ratio, increasing the efficiency of gas exchange and more particles can diffuse at once.

Question 2844

The narrowest and most numerous tubes of lungs are termed as?

A) Bronchus B) Alveoli C) Bronchioles D) Hilum

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Question 2845

At high altitude, RBCs of human blood will?

A) Increase in number B) Decrease in number C) Decrease in size D) Increase in size

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Question 2846

The functional respiratory organ of a fully formed tadpole is the?

A) Skin B) Lung C) Gill D) Air bladder

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Question 2847

Which type of respiratory organs are present in spiders and scorpions?

A) Book lungs B) Gill books C) Gills D) Lungs

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Question 2848

Which of the following has no blood but respires?

A) Earthworm B) Hydra C) Cockroach D) Fish

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Question 2849

Nephrons are connected with?

A) Respiratory system B) Nervous system C) Circulatory system D) Excretory system

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Question 2850

The basic unit of a vertebrate kidney is the?

A) Ureter B) Nephron C) malpighian tubule D) Islets of langerhans

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