The correct statement about respiration ...

The correct statement about respiration are
(i) In cockroach gaseous exchange occurs mainly between tracheoles and haemolymph
(ii) increase in inspiratory capacity does not involve an incrase in tidal volume
(iii) partial pressure of oxygen in blood is less than that in alveoli
(iv) chloride shift in ertyrocytes maintain the ionic ablance

I and ii

I iii and iv

I ii andiv

ii and iii

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Which of the following statements are true about respiration ? (i) during inhalation, ribs move inward and diaphragm is raised (ii) the gaseous exchange takes place in the alveoli (iii) haemoglobin has greater affinity for carbon dioxide than oxygen (iv) alveoli increase surface area for the exchange of gases

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 on alveolar surface. (ii) During gaseous exchange the gases diffuse from high particle pressure to low partial pressure. (iii) Carbon dioxide cannot be transporteed width haemoglobin. (iv) Earthworm respires through parapodia.

Read the following statements about respiratory system of humans : I. Type II alveoli help in secretion of a chemical surfactant called lecithin , which decreases the surface tension around alveoli. II. The diffusion membrane for exchange of gases is made up of three major cellular layers. III. Binding of oxygen with hemoglobin is primarily related to the partial pressure of O_2 . IV. Every 100 ml of oxygenated blood can deliver around 5 ml CO_2 to the tissues under normal physiological conditions. How many statement is /are correct from the above ?

State whether the following statements are true or false : (a) Fishes respire with their skin. (b) Aerobic respiration produces lactic acid at the end. ( c) Gas exchanges continue uninterrrupted in the lungs after a forceful expiration. (d ) A person can expal brough about by the relaxation of inspiratory muscles. (f ) vital capacity represents the maximum capacity to ventilate the lungs. ( g) A rise in Pco_(2) increase the oxygen -affinity of haemoglobin. ( h) Forceful expiration results from a forceful contraction of diaphragm. (i) Oxyhaemoglobin can hold much less carbon dioxide in the form of carbaminohaemoglobin than what deoxyhaemoglobin can.

which of the following statements are correct . ? (i) Fishes respire with the lungs . (ii) A water breather expends much nore energy in ventilating its respiratory surface than an air- breathing one. (iii) Lungs become empty after forceful expiration. (iv) A rise in Po_(2) increase the affinity of haemoglobin for oxygen. (v ) Lactic acid is produced in anaerobic respriation . (vi) Exchange of gases in the lungs is interrupted during expiration. (vii) A molecule of haemoglobin can carry 1-4 molecules of oxygen. (viii) maximum contraction of diaphragm causes maximum expiration. (ix) Respiratory movements are controlled by CO_(2) concentration of arterial . blood. (x ) Tidal volume is equal ot the vital capacity of the lungs.

Why cockroach blood does not contain respiratory pigment? I. It does not respire. II. It respires anaerobically. III. Oxygen passes to all the tissue through diffusion. IV. Oxygen reaches tissue through tracheoles. Choose the correct options.

Read the following statements about the excretory system in humans: I. A fall in GFR can activate the JG cells to release renin. II. ADH can also affect the kidney function by its constrictory effects on blood vessels. III. The proximity between the Henle's loop and vasa recta, as well as the counter-current in them help in maintaining an increasing osmolarity towards the outer medullary interstitium. IV Our lungs remove large amounts of CO_(2) (108 litres/day). V. Renal calculi are the stone or insoluble mass of crystallised salts like oxalates within the kidney. How many of these are correct?

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