Circulatory Pathways: Human Circulatory System, Cardiac Cycle, ECG, Class 11 Biology NCERT Solutions

1. There will be total 20 MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying.

1. The valve situated between the left atrium and the left ventricle is called
(1) Bicuspid valve (2) Tricuspid valve (3) Mitral valve (4) Eustachian tube

2 and 4 are correct.

1 and 2 are correct.

1 and 3 are correct.

l, 2 and 3 are correct.

Question 1 of 20

2. Artery is a blood vessel which carries blood

Away from the heart

Towards the heart

Has deoxygenated blood without exception

None of the above

Question 2 of 20

3. The SA node is located in

Upper lateral wall of the left atrium

Lower lateral wall of the right atrium

Lower lateral wall of the left atrium

Upper lateral wall of the right atrium

Question 3 of 20

4. The left atrium receives oxygenated blood through

Coronary artery

Pulmonary vein

Aorta

Pulmonary artery

Question 4 of 20

5. In human beings, the duration of the cardiac cycle is

8.0 second

0.5 second

0.8 second

0.08 second

Question 5 of 20

6. Blood enters the heart because muscles of the

Ventricles contract

Ventricles relax

Atria contract

Atria relax

Question 6 of 20

7. The maximum surface area of the circulatory system is seen in

Heart

Capillaries

Arterioles

Veins

Question 7 of 20

8. In ECG, the depolarisation of atria is indicated by

S-wave

R-wave

P-wave

Q-wave

Question 8 of 20

9. ‘Dup’ sound is produced during the closure of

Tricuspid valve

Semilunar valves

Bicuspid valve

Bicuspid valve and tricuspid valve

Question 9 of 20

10. In adult man, normal blood pressure is

100/80 mm Hg

80/120 mm Hg

100/120 mm Hg

120/80 mm Hg

Question 10 of 20

11. The opening of the right atrium into the right ventricle of the human heart is guarded by

Tricuspid valve

Pulmonary semilunar valves

Mitral valve

Bicuspid valve

Question 11 of 20

12. Pacemaker is

Ventricular muscles

SA node

Bundle of His

AV node

Question 12 of 20

13. Cockroach and other insects have blood which

Circulates through an open system

Resembles human blood in colour

Has RBCs

Circulates through arteries and veins

Question 13 of 20

14. For the blood to flow from the right ventricle to the left ventricle in the mammalian heart, it must flow through

Right ventricle, Pulmonary veins, Lungs, Pulmonary arteries, Left atrium

Right ventricle, Right atrium, Lungs, Pulmonary veins, Left atrium

Right ventricle, Pulmonary arteries, Lungs, Pulmonary veins, Left atrium

Right ventricle, Systemic aorta, Lungs, Pulmonary veins, Left atrium

Question 14 of 20

15. Red cell count is carried out by

Haemoglobinometer

Haemocytometer

Electrocardiogram

Sphygmomanometer

Question 15 of 20

16. Bundle of His is formed of

Muscular tissue supplied to heart

Nervous tissue supplied to ventricles

Muscular tissue supplied to ventricles

Nervous tissue supplied to heart

Question 16 of 20

17. Which of the following has a closed circulatory system?

Arthropods

Annelids

Platyhelminthes

Molluscs

Question 17 of 20

18.

P-wave of ECG indicates:

(1) Depolarisation of atrial muscles

(2) Activation of the SA node

(3) Spread of excitation from the SA node to the V node

(4) Repolarisation of atria and depolarisation of ventricle

2 and 4 are correct.

1, 2 and 3 are correct.

1 and 3 are correct.

1 and 2 are correct.

Question 18 of 20

19. Heart beat initiates from

Bundle of His

Purkinje fibres

Sinoauricular node

Auriculoventricular node

Question 19 of 20

20. A closed circulatory system occurs in

Housefly

Mosquito

Tadpole/fish

Cockroach

Question 20 of 20