Free Breathing And Exchange Of Gases (Weekly Quiz: 2) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

The ventilation movements of the lungs in mammals are governed by

(a) diaphragm

(b) muscular walls of lung

(c) costal muscles

(d) both (a) and (c).

Question-2

Which of the following represents a larger volume of air than is normally found in the resting tidal volume of a human lung ?

(a) Inspiratory reserve volume

(b) Expiratory reserve volume

(c) Residual volume

(d) All of the above

Question-3

The smallest and thinnest tube in the lung is

(a) larynx

(b) trachea

(c) bronchi

(d) bronchiole

Question-4

Listed below are four respiratory capacities (i–iv) and four jumbled respiratory volumes of a normal human adult.

	Respiratory capacities	Respiratory volumes
(i)	Residual volume	2500 mL
(ii)	Vital capacity	3500 mL
(iii)	Inspiratory reserve volume	1200 mL
(iv)	Inspiratoy capacity	4500 mL

Which one of the following is the correct matching of two capacities and volumes?

(a) (iii) 1200 mL, (iv) 2500 mL

(b) (ii) 2500 mL, (iii) 4500 mL

(c) (iv) 3500 mL, (i) 1200 mL

(d) (i) 4500 mL, (ii) 3500 mL

Question-5

The solubility of $CO_2$ is _______ times higher than that of $O_2$ .

(a) 20-25

(b) 10-15

(c) 30-35 times

(d) 210 times

Question-6

Assertion:
We can increase strength of inspiration and expiration.
Reason:
We can use additional muscle of thoracic and abdominal region.

(a) If both the assertion and reason are true but the reason is not a correct explanation of the assertion.

(b) If both the assertion and the reason are true and the reason is a correct explanation of the assertion.

(c) If the assertion is true but the reason is false.

(d) If both the assertion and reason are false.

Question-7

During the transportation of $CO_{2}$ when bicarbonate ions diffuses from RBC into plasma, the increased hydrogen ion concentration in RBC is balanced by the entry of which substance from plasma

(a) Oxygen

(b) Hydroxyl ions

(c) Water

(d) Chloride ions

Question-8

The respiratory centres, which control inspiration and expiration, are located in

(a) medulla oblongata

(b) diencephalon

(c) cerebellum

(d) spinal cord.

Question-9

Ciliated epithelium in trachea of mammals helps in

(a) perceiving’s sense of smell

(b) pushing expired air out

(c) sucking inspired air in

(d) pushing mucus out

Question-10

A person breathes in some volume of air by forced inspiration after having a forced expiration. This quantity of air taken in is

(a) Tidal volume

(b) Total lung capacity

(c) Vital capacity

(d) Inspiratory capacity