Free Breathing And Exchange Of Gases (Daily Quiz: 12) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

Vital capacity of our lungs is

(a) inspiratory reserve volume plus tidal volume.

(b) total lung capcity minus residual volume.

(c) total lung capacity minus expiratory reserve volume.

(d) inspiratory reserve volume plus expiratory reserve volume.

Question-2

Arrange the following events in the correct order as they occur during inspiration:

1. Air flows into the lungs.
2. Alveolar volume increases.
3. Thoracic volume increases.
4. Pleural pressure decreases.
5. Alveolar pressure decreases.

(a) III – IV – II – V – I

(b) I – II – III – IV – V

(c) II – V – I – III – IV

(d) IV – V – II – I – III

Question-3

Bulk of carbon dioxide (CO₂ ) released from body tissues into the blood is present as

(a) free CO₂ in blood plasma

(b) bicarbonate in blood plasma and RBCs

(c) 70% carbamino-haemoglobin and 30% as bicarbonate

(d) carbamino-haemoglobin in RBCs.

Question-4

Vital capacity is equal to

(a) IRV+ TV

(b) ERV + TV

(c) VC + RV

(d) ERV + TV + IRV

Question-5

Identify the correct statement with reference to transport of respiratory gases by blood ?

(a) Haemoglobin is necessary for transport of oxygen and carbonic anhydrase for transport of carbon dioxide.

(b) Haemoglobin is necessary for transport of carbon dioxide and carbonic anhydrase for transport of oxygen.

(c) Only oxygen is transported by blood.

(d) Only carbon dioxide is transported by blood.