Which of the following is most appropriate for aerobic respiration?
Important Questions on Life Processes
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 increases surface area for exchange of gases.
During respiration exchange of gases take place in
Which of the following statement (s) is (are) true about heart?
(i) Left atrium receives oxygenated blood from different parts of body while right atrium receives deoxygenated blood from lungs.
(ii) Left ventricle pumps oxygenated blood to different body parts while right ventricle pumps deoxygenated blood to lungs.
(iii) Left atrium transfers oxygenated blood to right ventricle which sends it to different body parts.
(iv) Right atrium receives deoxygenated blood from different parts of the body while left ventricle pumps oxygenated blood to different parts of the body.
What prevents the backflow of blood inside the heart during contraction?
Single circulation i.e., blood flows through the heart only once during one cycle of passage through the body, is exhibited by
