Free Breathing And Exchange Of Gases (Weekly Quiz: 3) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

How much oxygen is delivered to tissue by 100 ml of oxygenated blood under normal physiological condition?

(a) 20 ml

(b) 10 ml

(c) 5 ml

(d) 4 ml

Question-2

Gaseous exchange between blood and alveolar air across respiratory membrane occurs by

(a) Diffusion

(b) Osmosis

(c) Active transport

(d) Phagocytosis

Question-3

Covering of the lungs is called

(a) perichondrium

(b) peritoneum

(c) pericardium

(d) pleural membrane

Question-4

Glottis is an opening in the floor of

(a) Trachea

(b) Mouth

(c) Pharynx

(d) Diaphragm

Question-5

In the given diagram of human respiratory system what is the function of structure marked as X ?

(a) To filter and warm the air.

(b) To prevent food from entering into trachea.

(c) To help in exchange of gases.

(d) To catch dust and bacteria.

Question-6

Dissociation of oxyhaemoglobin can be promoted by

(a) high pC$O_{2}$

(b) low pC$O_{2}$

(c) low body temperature

(d) high blood pH

Question-7

The graph below shows how gaseous exchange in an amphibian varies with temperature.

The graph shows that at all temperatures the lungs :

(a) absorb less oxygen than the skin

(b) release more carbon dioxide than the skin

(c) absorb more oxygen than the skin

(d) release less carbon dioxide than the skin

Question-8

Lungs do not collapse between breaths and some air always remains in the lungs which can never be expelled because

(a) There is a positive intrapleural pressure

(b) There is a negative intrapleural pressure pulling a the lung walls

(c) Pressure in the lungs is higher than the atmospheric pressure

(d) There is a negative pressure in the lungs

Question-9

Haemoglobin is a type of

(a) respiratory pigment

(b) carbohydrate

(c) vitamin

(d) skin pigment

Question-10

Skin is an accessory organ of respiration in

(a) frog

(b) rabbit

(c) human

(d) lizard