(Circulation in Animals – Paper 04), Total Questions: 20, Subject: Biology, Topic: Circulation in Animals, Question Type: MCQs
| Sr. No. | Questions | Answers |
| 1. | Louder sound of heart beat occurs during closure of (a) Tricuspid valve (b) Auriculo-Ventricular valves (c) mitral valve (d) Semilunar valves |
Answer: (b) |
| 2. | Mammalian heart is enclosed by (a) Perichondrium (b) Periosteum (c) No membrane (d) Pericardium |
Answer: (d) |
| 3. | Mitral valve is also called (a) Tricuspid valve (b) Semilunar valve (c) Bicuspid valve (d) None of the above |
Answer: (c) |
| 4. | Mitral/Bicuspid valve connects (a) Left atrium and left ventricle (b) Left atrium and right ventricle (c) Right atrium and left ventricle (d) Right atrium and right ventricle |
Answer: (a) |
| 5. | Murmur occurs due to defect in (a) Heart valves (b) SA node (c) AV node (d) Purkinje fibres |
Answer: (a) |
| 6. | Muscles which help in circulation of blood of Cockroach are (a) Cardiac muscles (b) Dartos muscles (c) Detrusor muscles (d) Alary muscles |
Answer: (d) |
| 7. | Number of RBC/mm3 in healthy female is (a) 4.5 – 5.0 million (b) 5.5 – 6.0 million (c) 3.5 – 4.0 million (d) 6.5 – 7.0 million |
Answer: (a) |
| 8. | Number of WBCs present in one mm3 of blood is (a) 5000 (b) 7000 (c) 1000 (d) 20000 |
Answer: (b) |
| 9. | Open blood vascular system is seen in (a) Earthworm (b) Sepia (c) Man (d) Cockroach |
Answer: (d) |
| 10. | Open vascular system occurs in (a) Fish (b) Prawns / Periplneta (c) Snake (d) Earthworm |
Answer: (b) |
| 11. | Origin of heart beat and its conduction is represented by (a) A V node – Bundle of His – SA node – Purkinje fibres (b) SA node – Purkinje fibres – AV node – Bundle of His (c) Purkinje fibres – AV node – SA node – Bundle of His (d) SA node – AV node – Bundle of His – Purkinje fibres |
Answer: (d) |
| 12. | Oval depression of fossa is observed over (a) interatrial septum (b) interventricular septum (c) right auriculo-ventricular septum (d) left auriculoventricular septum |
Answer: (a) |
| 13. | Oxygen carrier in human blood is (a) Iron (b) Methaemoglobin (c) Haemoglobin (d) Haemocyanin |
Answer: (c) |
| 14. | Oxygenated blood from lungs enters heart through (a) Pulmonary vein (b) Pulmonary artery (c) Coronary system (d) Coronary vein |
Answer: (a) |
| 15. | Oxygenated blood occurs in (a) Pulmonary arteries (b) Right ventricle (c) Right atrium (d) Pulmonary veins |
Answer: (d) |
| 16. | Pace maker is (a) Instrument for measuring heart beats (b) Instrument for measuring pulse rate (c) Auriculo-ventricular node that provides impulse for heart beat (d) Sinu-auricular node that provides impulse for heart beat. |
Answer: (d) |
| 17. | Pace maker is situated in heart (a) In the wall of right atrium (b) On interauricular septum (c) On interventricular septum (d) In the wall of left atrium |
Answer: (a) |
| 18. | Pacemaker of heart is (a) AV node (b) SA node (c) Bundle of His (d) Purkinje fibres |
Answer: (b) |
| 19. | Pericardial fluid is secreted by (a) Myocardium (b) Perietal peritoneum (c) Visceral peritoneum (d) None of the above |
Answer: (c) |
| 20. | Pericardial space in cockroach is regularly altered by muscles (a) Ciliary (b) Alary (c) Circular (d) Longitudinal |
Answer: (b) |