Circulation in Animals (Multiple Choice Questions and Answers)

Circulation in Animals

Multiple Choice Questions and Answers

1. In which animal haemoglobin is dissolved

(a) cockroach

(b) earthworm

(c) frog

(d) rabbit

Answer: (b) earthworm

2. Chordae tendinae occur in

(a) ventricles of heart

(b) auricles of heart

(c) aorta

(d) ventricles of brain

Answer: (a) ventricles of heart

3. Heart beat initiates from

(a) Auriculo-ventricular

(b) Sino-auricular node

(c) Bundle of His

(d) Purkinje fibres

Answer: (b) Sino-auricular node

4. Nerves attached to heart are meant for

(a) initiation of heart beat

(b) release of acetylcholine

(c) release of adrenaline

(d) regulation of heart beat

Answer: (d) regulation of heart beat

5. Vagus nerve on stimulation will cause heart rate to

(a) decrease

(b) increase

(c) no change

(d) none

Answer: (a) decrease

 6. Sympathetic nerve increases heart pain due to release of acid alkaline inhibition of

(a) release of acetylcholine

(b) inhibition of acetylcholine

(c) release of non-adrenaline

(d) ) inhibition of adrenaline

Answer: (c) release of non-adrenaline

7. Vein differs from artery in having

(a) narrow lumen

(b) strong muscular walls

(c) pigmented wall

(d) valves

Answer: (d) valves

8. Pulmonary vein carries

(a) impure blood from lungs

(b) impure blood from heart

(c) pure blood from lungs

(d) pure blood from heart

Answer: (d) pure blood from heart

9. Renal portal system is absent in

(a) mammals

(b) birds

(c) reptiles

(d) amphibians

Answer: (a) mammals

 10. Open blood vascular system is found in

(a) Cockroach

(b) Earthworm

(c) Bird

(d) Mammal

Answer: (a) Cockroach

 11. Blood and lymph differ in

(a). Blood has RBCs which are absent in lymph

(b). Blood has WBCS which are absent in lymph

(c). Blood has cells while lymph is without cells

(d). Blood has several inorganic substances absent in lymph

Answer: (a). Blood has RBCs which are absent in lymph

12. In sun the face becomes reddish due to

(a) effect of light

(b) expansion of blood capillaries

(c) breakup of RBC and release of haemoglobin

(d) irritation of skin

Answer: (b) expansion of blood capillaries

13. Instrument for hearing heart beat is

(a) Sphygmomanometer

(b) Electric Cardiograph

(c) Eco cardio graph

(d) Stethoscope

Answer: (a) Sphygmomanometer

14. Lung fish have ………….chambered heart

(a) 2

(b) 4

(c) 3

(d) 1

Answer: (c) 3

 15. Average heart beat/ pulse rate in adult human being is

(a) 100/minute

(b) 80/minute

(c) 72/minute

(d) 60/minute

Answer: (c) 72/minute

16. Normal blood pressure in an adult human being is

(a) 120/80

(b) 100/ 60s

(c) 150/100

(d) 200/110

Answer: (a) 120/80

17. Heart covering is

(a) peritoneum

(b) pleural membrane

(c) pericardium

(d) visceral membrane

Answer: (c) pericardium

18. Hepatic portal system starts from

(a) digestive system to liver

(b) kidney to liver

(c) kidney to liver

(d) liver to kidney

Answer: (a) digestive system to liver

19. Circulation of blood was discovered by

(a) Darwin

(b) Harvey

(c) Aristotle

(d) Lister

Answer: (b) Harvey

20. Which of the following statements is true

(a) All veins carry deoxygenated blood

(b) All arteries carry oxygenated blood

(c) All veins except one carry oxygenated blood

(d) All arteries except one carry oxygenated blood

Answer: (d) All arteries except one carry oxygenated blood

21. Blood capillaries are made of

(a) endothelium, connective tissue and muscle fibres

(b) endothelium and muscle fibres

(c) endothelium and connective tissue

(d) endothelium only

Answer: (d) endothelium only

22. If the heart is cut out from the body of frog

(a) it will continue beating for a long time if it is kept moist

(b) it will continue beating for a long time if it is kept dry

(c) it will not beat at all

(d) none of these

Answer: (a) it will continue beating for a long time if it is kept moist

23. Cells found in bone marrow include

(a) ABC

(b) RBC and leukocytes

(c) leukocytes

(d) lymphocytes

Answer: (b) RBC and leukocytes

24. RBC in mammals have no nucleus because

(a) it has degenerated during development

(b) they do not have nucleus since early

(c) nucleus is harmful for RBC

(d) nucleus decreases surface area

Answer: (a) it has degenerated during development

25. Presence of RBC in urine is known as

(a) proteinuria

(b) alkaptonuria

(c) hematuria

(d) uraethiasis

Answer: (c) hematuria

26.Which of the following blood vessels in the circulatory system of frog has more oxygenated blood?

(a) pulmocutaneous artery

(b) pulmocutaneous vein

(c) pulmonary artery

(d) precaval veins

Answer: (b) pulmocutaneous vein

27. During the process of blood circulation vitamin K helps in the

(a) conversion of prothrombin to thrombin

(b) conversion of fibrinogen to fibrin

(c) formation of thromboplastin

(d) formation of prothrombin

Answer: (d) formation of prothrombin

28. Canal system is found in

(a) Sponges

(b) Coelenterates

(c) Flatworms

(d) Annelids

Answer: (a) Sponges

 29. pH of blood in arteries and veins is

(a) more in veins and less in arteries

(b) more in arteries and less in veins

(c) same

(d) not definite

Answer: (b) more in arteries and less in veins

30. If haemoglobin is replaced by haemocyanin, the blood will carry

(a) less oxygen

(b) more oxygen

(c) no oxygen

(d) same amount of oxygen

Answer🙁 a) less oxygen

31. Which one of the following term is not applicable to coagulation of blood?

(a) fibrin

(b) fibrinogen

(c) calcium

(d) bilirubin

Answer: (d) bilirubin

32. Major part of the plasma consists of

(a) blood cells

(b) inorganic substances

(c) organic substances

(d) water

Answer: (d) water

33. Which is correct about leukocytes?

(a) They are red coloured

(b) They can cross capillaries

(c) They are enucleate

(d) Decrease in their number causes leukemia

Answer: (b) They can cross capillaries

34. Pulmonary artery differs from pulmonary vein in having

(a) thick wall

(b) thin wall

(c) valves

(d) both B and C

Answer: (a) thick wall

35. Adrenaline directly affects on

(a) S.A. Node

(b) Beta cells of langerhans

(c) Dorsal root of spinal cord

(d) Epithelial cells of stomach

Answer: (a) S.A. Node

36. Continuous bleeding from an injured part of body is due to deficiency of

(a) vitamin A

(b) vitamin B

(c) vitamin K

(d) vitamin E

Answer: (c) vitamin K

37. Impulse of heartbeat originates from

(a) S.A Node

(b) AV node

(c) vagus nerve

(d) cardiac nerve

Answer: (a) S.A Node

38.What should be the blood types of parents in the children having only A and B types of blood?

(a) A and O

(b) AB and A

(c).AB and O

(d) A and B

Answer: (c).AB and O

39. Heart of elephant is

(a) neurogenic

(b) myogenic

(c) both a and b

(d) none of these

Answer: (b) myogenic

40. Open vascular system is found in

(a) Man

(b) Fish

(c) Prawn

(d) Snake

Answer: (c) Prawn

41. Pulmonary artery carries

(a) pure blood from lungs

(b) impure blood from lungs

(c) impure blood to lungs

(d) pure blood to lungs

Answer: (c) impure blood to lungs

42. Which one of the following is a matching pair of a certain body feature and its value/count in a normal human adult?

(a) urea 5 to 10 mg/100 ml of blood

(b) blood sugar (fasting) 80-100 mg/100ml

(c) total blood volume-3-4 litres

(d) ESR in wintrobe method- 9-15mm in males and 20-34mm in females.

Answer: (b) blood sugar (fasting) 80-100 mg/100ml

43. Which one of the following is a matching pair?

(a) Luub- sharp closure of AV valves at the beginning of ventricular systole

(b) Dup- sudden opening of semilunar valves are the beginning of ventricular diastole

(c) pulsation of the radial artery-valves in the blood vessels

(d) initiation of heart beat- purkinje fibres

Answer: (a) Luub- sharp closure of AV valves at the beginning of ventricular systole

44. Bundle of His is a network of

(a) muscle fibres distributed throughout the heart walls

(b) muscle fibres found only in the ventricle wall

(c) nerve fibres distributed in ventricles

(d) nerve fibres found throughout the heart

Answer: (b) muscle fibres found only in the ventricle wall

45. Systemic heart refers to

(a) the heart that contracts under stimulation from nervous system

(b) left auricle and left ventricle in higher vertebrates

(c) entire heart in lower vertebrates

(d) the two ventricles together in human

Answer: (b) left auricle and left ventricle in higher vertebrates

46. Thoracic duct in humans is associated with

(a) aorta

(b) left subclavian vein

(c) right subclavian vein

(d) hepatic duct

Answer: (b) left subclavian vein

47. Nucleated biconvex RBCs are found in

(a) rat

(b) human

(c) dog

(d) frog

Answer: (d) frog

48. Factors present on surface of RBC related to heredity are

(a) blood groups

(b) antigens

(c) antibodies

(d) haemoglobin

Answer: (b) antigens

49. Pulmonary vein carries

(a) deoxygenated blood

(b) oxygenated blood

(c) mixed blood

(d) None of the above.

Answer: (b) oxygenated blood

50. In ventricular systole, oxygenated blood is pumped into

(a) Pulmonary artery and deoxygenated into artery

(b) Aorta and deoxygenated into pulmonary vein

(c) Pulmonary vein and deoxygenated into pulmonary artery

(d) Aorta and deoxygenated into pulmonary artery.

Answer: (d) Aorta and deoxygenated into pulmonary artery.