Free Body Fluids And Circulation (Daily Quiz: 1) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

Pulmonary vein, carrying oxygenated blood, opens into

(a) right auricle

(b) left auricle

(c) left ventricle

(d) right ventricle

Question-2

Which of the following statements is correct regarding joint diastole?

(a) Both ventricles relax but atria contract.

(b) Both atria relax but ventricles contract.

(c) Both semilunar valves are open.

(d) Tricuspid and bicuspid valves are open.

Question-3

Which cell represents the surface antigen for ABO blood group?

(a) B

(b) A

(c) C

(d) D

Question-4

Which one of the following is a matching pair?

(a) Dup-Sudden opening of semilunar valves at the beginning of ventricular diastole.

(b) Lubb-Sharp closure of AV valves at the beginning of ventricular systole.

(c) Pulsation of the radial artery-Valves in the blood vessels.

(d) Purkinje fibres-Initiation of the heart beat.

Question-5

What is true about RBCs in humans?

(a) They transport 99.5 per cent of $O_{2}$ .

(b) They carry about 20–25 per cent of $CO_{2}$ .

(c) They transport about 80 per cent oxygen only and the rest 20 per cent of it is transported in dissolved state in blood plasma.

(d) They do not carry $CO_{2}$ at all.