MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following regulates the normal activities of the heart? |
| A. | CNS |
| B. | Kidneys |
| C. | Heart |
| D. | Eyes |
| Answer» D. Eyes | |
| 2. |
Which of the following is not correctly marked in the given diagram? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 3. |
What is the hepatic portal system? |
| A. | The connection between the digestive tract and kidneys |
| B. | The connection between the alimentary canal and heart |
| C. | The connection between the alimentary canal and the brain |
| D. | The connection between the alimentary canal and the liver |
| Answer» E. | |
| 4. |
Each artery and vein consists of two layers. |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
Mitral valve is present between which of the following? |
| A. | The left atrium and left ventricle |
| B. | The right atrium and right ventricle |
| C. | Left and right atrium |
| D. | Left and right ventricles |
| Answer» B. The right atrium and right ventricle | |
| 6. |
The atrium and ventricle are separated by which of the following tissues? |
| A. | Intra-ventricular wall |
| B. | Atrio-ventricular septum |
| C. | Inter-ventricular septum |
| D. | Intra-atrial septum |
| Answer» C. Inter-ventricular septum | |
| 7. |
Which of the following walls separate the right and left atria? |
| A. | Thin, intra-atrial septum |
| B. | Thick, intra-atrial septum |
| C. | Thick, inter-atrial septum |
| D. | Thin, inter-atrial septum |
| Answer» E. | |
| 8. |
The heart is covered by a membranous bag of how many walls? |
| A. | One |
| B. | Two |
| C. | Three |
| D. | It is not covered by a membranous bag |
| Answer» C. Three | |
| 9. |
Which of the following is not included in the human circulatory system? |
| A. | Heart |
| B. | Blood vessels |
| C. | Blood |
| D. | Skin |
| Answer» E. | |
| 10. |
The heart is an ectodermally derived organ. |
| A. | True |
| B. | False |
| Answer» C. | |
| 11. |
Which of the following organisms do not show double circulation? |
| A. | Birds |
| B. | Mammals |
| C. | Crocodiles |
| D. | Reptiles |
| Answer» E. | |
| 12. |
Which of the following organisms show incomplete double circulation? |
| A. | Birds |
| B. | Reptiles |
| C. | Mammals |
| D. | Crocodiles |
| Answer» C. Mammals | |
| 13. |
Which of the following organisms show single circulation? |
| A. | Fishes |
| B. | Birds |
| C. | Mammals |
| D. | Reptiles |
| Answer» B. Birds | |
| 14. |
How many chambers are present in the heart of crocodiles? |
| A. | Two |
| B. | Three |
| C. | Four |
| D. | Five |
| Answer» D. Five | |
| 15. |
How many types of circulatory pathways are present in the animal kingdom? |
| A. | One |
| B. | Two |
| C. | Three |
| D. | Four |
| Answer» C. Three | |