Breathing and Exchange of Gases

In humans, respiration occurs in the following steps. Arrange these steps in the correct order. Choose the correct answer from the options given below :

1. A, B, C, D, E
2. C, A, B, E, D
3. C, B, E, A, D
4. E, A, C, D, B

Match List-I with List-II.

1. A-III, B-IV, C-I, D-II
2. A-III, B-I, C-IV, D-II
3. A-I, B-II, C-III, D-IV
4. A-I, B-III, C-II, D-IV

Sponges exchange O2 with CO2 by .

1. gills
2. simple diffusion over their entire body surfaces
3. moist cuticle
4. tracheal tubes

Match List-I with List-II Choose the correct answer from the options given below :

1. A-II, B-IV, C-III, D-I
2. A-II, B-III, C-IV, D-I
3. A-III, B-I, C-IV, D-II
4. A-III, B-I, C-II, D-IV

Match List I with List II: Choose the correct answer from the options given below :

1. A-II, B-IV, C-I, D-III
2. A-III, B-II, C-IV, D-I
3. A-II, B-I, C-IV, D-III
4. A-I, B-III, C-II, D-IV

Which of the following factors are favourable for the formation of oxyhaemoglobin in alveoli?

1. High pO2 and High pCO2
2. High pO2 and Lesser H+ concentration
3. Low pCO2 and High H+ concentration
4. Low pCO2 and High temperature

Match List-I with List-II: Choose the correct answer from the options given below:

1. A-IV, B-III, C-II, D-I
2. A-II, B-IV, C-I, D-III
3. A-III, B-I, C-IV, D-II
4. A-I, B-II, C-III, D-IV

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R. In the light of the above statements, choose the correct answer from the options given below.

1. A is true but R is false.
2. A is false but R is true.
3. Both A and R are true and R is the correct explanation of A.
4. Both A and R are true but R is NOT the correct explanation of A

Vital capacity of lung is .

1. IRV + ERV + TV + RV
2. IRV + ERV + TV − RV
3. IRV + ERV + TV
4. IRV + ERV

Under normal physiological conditions in human beings every 100 ml of oxygenated blood can deliver ml of O2 to the tissues.

1. 2 ml
2. 5 ml
3. 4 ml
4. 10 ml