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Biology Class 11 Chapter 13 - Gaseous Exchange - Part 1
1.
The heart of the fish is single circuit and the blood flows in:
a) One and two directions
b) Two directions
c) Reverse direction
d) One direction
2.
Carbon dioxide is carried as carboxy hemoglobin
a) 15%
b) 10%
c) 20%
d) 12%
3.
The __________ system of the cockroach is very specialised.
a) Glycolate
b) Photo respiration
c) Respiratory
d) Oxygen
4.
Lung capacity in an adult human
a) Corncinoma
b) Muscle fibre
c) 5 litres
d) 20%
5.
In the lungs of birds instead of already tiny thin walled ducts are present called _________.
a) Oxyhemoglobin
b) Pleura
c) Parabronchi
d) Earthwarm
6.
________ maintains a step diffusion gradient.
a) Ventilation
b) Parabronchi
c) Oxyhemoglobi
d) Organ
7.
Aquatic mammals
a) Carried as bicarbonate ions
b) Cetaceans
c) Mycobacterium
d) Regulator of normal alveolar.
8.
Hydra has no specialized _________ for respiration.
a) Pumps
b) Parabronchi
c) Glycolate
d) Organ
9.
The roots of the land plants get oxygen
a) Air existing in the spaces between the soil particles.
b) Lungs in the land vertebrates.
c) Air sac
d) 12000 per square centimeters of leaf in tobacco plant.
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