Which among the following does not exchange o2 with CO2 through simple diffusion

b) Earthworms | They use moist cuticle for exchange

Which among the following have well developed respiratory system

d) Mammals | Mammals well developed system includes lungs, alveoli, bronchi and bronchioles

How many lobes are present in right lung

c) 3 | Left lung is 2 lobed whereas right lung is 3 lobed

Name a sound box which is responsible for sound production

b) Larynx | Pharynx is common passage for food and air, epiglottis prevent entry of food into wind pipe

Thoracic chamber is dorsally formed by

a) Vertebral column | Sternum is ventrally formed, ribs laterally and diaphragm on the lower side

Inspiration occurs if the pressure within the lungs is

b) Less tha atm pressure | If the pressure is more than expiration occurs

The part starting from external nostril upto terminal bronchioles is known as

a) Conducting part | Alveoli and their ducts form exchange or the respiratory part

What is the inspiratory reserve volume

a) 2500-3000 ml | 500ml is tidal volume, 1000-1100 ml is expiratory reserve volume

which among the following is measured by spirometer

d) TV | Rest all aren?t measured by spirometer

Pressure contributed by an individual gas in a mixture of gas is known as

a) Partial pressure | Partial pressure is exerted by individual gases

Solubility of CO2 is how many times higher than O2

d) 20-25 | Its 20-25 times higher

What is the partial pressure of O2 in atmosphere

b) 159 | O2 pressure is 159 and co2 is 0.3

What is the partial pressure of O2 in deoxygenated blood

b) 40 | C02 pressure in deoxy blood is 45

How many percent of co2 is carried by plasma in dissolved form

b) 7 | 7 percent is carried by plasma

Every 100ml of deoxy blood delivers approx

c) 4ml of co2 to alveoli | It delivers of 4ml of co2

RBC contains very high quantity of which enzyme

a) Carbonic anhydrase | Only carbonic anhydrase is present in RBC

which among the following is caused due to decreased respiratory surface area

b) Emphysema | Astma occurs due to inflammation of bronchioles

Which type of curve is formed when percent of haemoglobin is plotted against po2

c) Sigmoid | Sigmoid curve is obtained

which among the following is responsible to shift o2 dissociation curve right

a) High Pco2 | Option b and c shift the curve left

Respiration Class 11th Biology | Practice MCQs with Answers for NEET

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Respiration Class 11th Biology | Practice MCQs With Answers For NEET

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Practice these important 25 questions from the chapter Respiration (Biology 11th class). Start Test without Login in
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Q.No.	Que title	Option 1 (a)	Option 2 (b)	Option 3 (c)	Option 4 (d)
1	Which among the following does not exchange o2 with CO2 through simple diffusion	Earthworms	Earthworms	Sponges	Flatworms
2	Which among the following have well developed respiratory system	Cockroaches	Earthworms	Sponges	Mammals
3	How many lobes are present in right lung	2	5	3	4
4	Name a sound box which is responsible for sound production	Pharynx	Larynx	Epiglottis	None of the above
5	Thoracic chamber is dorsally formed by	Vertebral column	Sternum	Ribs	Diaphragm
6	Inspiration occurs if the pressure within the lungs is	More than atm pressure	Less tha atm pressure	Equal to atm pressure	None of the above
7	The part starting from external nostril upto terminal bronchioles is known as	Conducting part	Exchange part	Respiratory part	None of the above
8	What is the structural and functional unit of lungs	Bronchioles	Alveoli	Bronchi	Both a and c
9	On an average healthy human breathes how many times per minute	12-16	15-16	20-25	72
10	What is the inspiratory reserve volume	2500-3000 ml	500 ml	1000-1100 ml	None of the above
11	Volume air inspired or expired during normal respiration is known as	TV	IRV	ERV	RV
12	which among the following is measured by spirometer	Total lung capacity	FRC	RV	TV
13	Pressure contributed by an individual gas in a mixture of gas is known as	Partial pressure	Diffusion pressure	Osmotic pressure	None of the above
14	Solubility of CO2 is how many times higher than O2	10-15	30-40	20-21	20-25
15	What is the partial pressure of O2 in atmosphere	156	159	94	40
16	What is the partial pressure of O2 in deoxygenated blood	45	40	95	43
17	How many percent of co2 is carried by plasma in dissolved form	6	7	20-25	None of the above
18	How many percent of co2 is carried as bicarbonate	50	97	70	25
19	Every 100ml of deoxy blood delivers approx	2ml of co2 to alveoli	3 of co2 to alveoli	4ml of co2 to alveoli	7ml of co2 to alveoli
20	RBC contains very high quantity of which enzyme	Carbonic anhydrase	Lysosome	Ligase	None of the above
21	which among the following is caused due to decreased respiratory surface area	Astma	Emphysema	Sclerosis	None of the above
22	Whose role in respiratory rhythm regulation is insignificant	Co2	O2	Both a and b	None of the above
23	Pneumotaxic centre is present in which region of brain	Medulla	Hypothalamus	Pons	None of the above
24	Which type of curve is formed when percent of haemoglobin is plotted against po2	Straight line	Hyperbola	Sigmoid	Parabola
25	which among the following is responsible to shift o2 dissociation curve right	High Pco2	Low pco2	Low H+	None of the above

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