Consider the following four statements (i - iv) and select the correct option stating which ones are true (T) and which ones are false (F).
(i) Formation of oxyhaemoglobin occurs at the alveolar surface.
(ii) During gaseous exchange the gases diffuse from high partial pressure to low partial pressure.
(iii) Carbon dioxide cannot be transported by haemoglobin.
(iv) Earthworm respires through parapodia.

(i) T(ii)F(iii)T(iv)F

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(i) F(ii)F(iii)T(iv)F

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(i)F(ii)T(iii)F(iv)T

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(i)T(ii)T(iii)F(iv)F

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Solution

The correct option is C (i)T(ii)T(iii)F(iv)F
About 20-25% $C O_{2}$ is carried by haemoglobin as carbaminohaemoglobin. Earthworm respires through body wall.

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Similar questions

Q. Which of the following conditions is/are favorable for oxyhaemoglobin formation in alveoli?
i) High partial pressure of oxygen, low partial pressure of carbon dioxide
ii) Low partial pressure of oxygen, high partial pressure of carbon dioxide
iii) Low pH, low temperature
iv) High pH, high temperature

Question 14
Which of the following statement(s) is (are) true about respiration?

(i) During inhalation, ribs move inward and the diaphragm is raised.
(ii) In the alveoli, exchange of gases takes place i.e., oxygen from alveolar air diffuses into blood and carbon dioxide from the blood into the alveolar air.
(iii) Haemoglobin has a greater affinity for carbon dioxide than oxygen.
(iv) Alveoli increase surface area for exchange of gases.

(a) (i) and (iv)
(b) (ii) and(iii)
(c) (i) and (iii)
(d) (ii) and (iv)

Q. Consider the following four statements and select the correct option stating which ones are true (T) and which ones are false (F).
(i) Expiration is normally brought about by the relaxation of inspiratory muscles.
(ii) Oxyhaemoglobin can hold much less carbon dioxide in the form of carbaminohaemoglobin than what deoxyhaemoglobincan.
(iii) A person can expel air the air from the lungs by a forceful expiration.
(iv) A rise in

P C O_{2}

increases the oxygen - affinity of haemoglobin.

Q. Which of the following statements are correct/incorrect?
I. The blood transports carbon dioxide comparatively easily because of its highest solubility.
II. Approximately 89% of carbon dioxide is transported being dissolved in the plasma of blood.
III. The carbon dioxide produced by the tissues, diffuses passively into the blood stream and passes into red blood corpuscles and react with water to form

H_{2} C O_{3}

.
IV. The oxyhaemoglobin

(H b O_{2})

of the erythrocytes is basic.
V. The chloride ions diffuse from plasma into the erythrocytes to maintain ionic balance.

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The correct option is C (i)T(ii)T(iii)F(iv)FAbout 20-25% CO2 is carried by haemoglobin as carbaminohaemoglobin. Earthworm respires through body wall.

The correct option is C (i)T(ii)T(iii)F(iv)F
About 20-25% $C O_{2}$ is carried by haemoglobin as carbaminohaemoglobin. Earthworm respires through body wall.