Biology Class 11 Chapter 13 - Gaseous Exchange - Part 5

Biology Class 11 Chapter 13 - Gaseous Exchange - Part 5

1. Their functional unit of the lungs

a) Bronchioles are obstructed as a result of inflammation.
b) Lungs in the land vertebrates.
c) Air existing in the spaces between the soil particles.
d) Air sac

2. In a hot and dry day level of __________ inside the leaf rises.

a) Glycolate
b) Organ
c) Ventilation
d) Oxygen

3. Myolglobin is Iron containing protein pigment

a) 20%
b) Sheet skeletal muscle
c) Muscle fibre
d) Corncinoma

4. Lungs are covered with double layered thin membranous sacs called ___________.

a) Oxyhemoglobin
b) Pleura
c) Glycolate
d) Earthwarm

5. Water is denser than air:

a) 8000 times
b) 800 times
c) 80,000 times
d) 1800 times

6. Carbonic anhydrase is present in ____________.

a) RBC
b) Parabronchi
c) Pleura
d) Earthwarm

7. 70 % carbondioxide

a) Regulator of normal alveolar.
b) Stores some oxygen
c) Cetaceans
d) Carried as bicarbonate ions

8. The normal human blood absorbs at sea level is about:

a) 02 ml/100 ml of blood
b) 200 ml/100 ml of blood
c) 20 ml/100 ml of blood
d) 19.6 ml/100 ml of blood

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