Question

The graph below shows the changes in the relative concentration of  two gases in the air surrounding, a group of mice.

Which process in  the mice most likely accounts for the changes shown?
a) Evaporation
 b) Photosynthesis 
c) Respiration 
d) digestion 

Q17(ii) During respiration exchange of gases takes place in: 
a) Trachea & larynx
 b) Alveoli of lungs 
c) Alveoli & throat  d) Throat & larynx 

 Q17(iii) Choose the false statement about the movement of the air into the  lungs: 
a) As we breathe in, the size of the chest cavity decreases. 
b) We lift our ribs when we breathe in air. 
c) We flatten our diaphragm when we breathe in air. 
d) Air is filtered by the hairs present in the nostrils. 

Q17(iv) Which of the following conditions leads to the generation of lactic  acid in the muscle cells during heavy exercise? 
a) Deficiency of calcium. 
b) Deficiency of glucose. 
c) Deficiency of oxygen.
d) Excess of glucose. 

Q17(v) Why is the rate of breathing in terrestrial organisms much slower than  aquatic organisms?
 a) Terrestrial organisms need less oxygen than aquatic  organisms. 
b) The amount of oxygen found in the air is more than the  amount of oxygen dissolved in water.
c) The surface area of respiratory organs of terrestrial organisms  is much larger than aquatic animals. 
d) Terrestrial organisms need less oxygen than aquatic organism​

Answer 1

Answer:

I can't see the graph

Q17(ii) b) Alveoli of lungs

Q17(iii) a) As we breathe in, the size of the chest cavity decreases.

Q17(iv) c) Deficiency of oxygen.

Q17(v) b) The amount of oxygen found in the air is more than the  amount of oxygen dissolved in water.