MCQOPTIONS
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MCQOPTIONS
This section includes 68 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
When exchange of gases take place in lungs, it is called |
| A. | diffusion |
| B. | osmosis |
| C. | pulmonary respiration |
| D. | active transport |
| Answer» D. active transport | |
| 2. |
Breathing occurs due to |
| A. | chemical process |
| B. | muscular contractions and movements of ribs |
| C. | oxidation of organic molecules to release energy and water |
| D. | physical process |
| Answer» C. oxidation of organic molecules to release energy and water | |
| 3. |
Oxygen is less soluble as compare to carbon dioxide is |
| A. | TRUE |
| B. | FALSE |
| C. | to some extent true |
| D. | not true at all |
| Answer» B. FALSE | |
| 4. |
Asthmatic patients are prone to |
| A. | pollen |
| B. | spores |
| C. | humidity |
| D. | All of the Above |
| Answer» E. | |
| 5. |
Mammals which can stay under ocean for more than two hours without coming up for air are |
| A. | cetaceans |
| B. | sea urchin |
| C. | sea anemones |
| D. | oceanic |
| Answer» B. sea urchin | |
| 6. |
Tuberculosis is a disease which is |
| A. | harmless |
| B. | contagious |
| C. | venereal |
| D. | fatal |
| Answer» C. venereal | |
| 7. |
One liter of air contain oxygen about |
| A. | 200 ml |
| B. | 300 ml |
| C. | 100 ml |
| D. | 400 ml |
| Answer» B. 300 ml | |
| 8. |
An estimated survey reports that 90% lung cancer is caused by |
| A. | drinking |
| B. | smoking |
| C. | breathing |
| D. | eating |
| Answer» C. breathing | |
| 9. |
Exchange of gases in respiration is only done by |
| A. | osmosis |
| B. | diffusion |
| C. | transport |
| D. | movement |
| Answer» C. transport | |
| 10. |
Epithelium is only two cell thick which facilitates process of |
| A. | respiration |
| B. | diffusion |
| C. | exchange |
| D. | inchange |
| Answer» C. exchange | |
| 11. |
When air rushes into vacuum inside of lungs, it constitutes process of |
| A. | inspiration |
| B. | expiration |
| C. | inhalation |
| D. | exobreath |
| Answer» C. inhalation | |
| 12. |
Respiration in fish is done by help of paired |
| A. | fins |
| B. | gills |
| C. | operculum |
| D. | bladder |
| Answer» C. operculum | |
| 13. |
Flowering plants having rhizomes do not include |
| A. | canna |
| B. | lallang |
| C. | ginger |
| D. | garlic |
| Answer» E. | |
| 14. |
Ribs and intercoastals muscles constitute walls of |
| A. | diaphragm |
| B. | lungs |
| C. | ribs |
| D. | chest |
| Answer» E. | |
| 15. |
Most important metabolic activities of all organisms is |
| A. | digestion |
| B. | excretion |
| C. | respiration |
| D. | injestion |
| Answer» D. injestion | |
| 16. |
Tissue which is made up of dead cells in older stems is called |
| A. | bark |
| B. | lamina |
| C. | cork |
| D. | timber |
| Answer» D. timber | |
| 17. |
In rigorous exercises, fatigue results due to |
| A. | high concentration of ethanol |
| B. | high concentration of lactic acids |
| C. | partial breakdown of glucose |
| D. | a loss of oxygen debt |
| Answer» C. partial breakdown of glucose | |
| 18. |
Subdivision of bronchus are called |
| A. | bronchioles |
| B. | bronchi |
| C. | alveoli |
| D. | trachea |
| Answer» C. alveoli | |
| 19. |
Corpuscles which are combined with potassium are carriers of |
| A. | carbon dioxide |
| B. | oxygen |
| C. | hydrogen |
| D. | nitrogen |
| Answer» B. oxygen | |
| 20. |
Special pores help in gaseous exchange in cork tissue are |
| A. | stomata |
| B. | pores |
| C. | lenticels |
| D. | None of the Above |
| Answer» D. None of the Above | |
| 21. |
When there is low tension of oxygen, oxyhaemoglobin rapidly |
| A. | fade |
| B. | dissociate |
| C. | multiply |
| D. | balance |
| Answer» C. multiply | |
| 22. |
Depending upon how long a plant lives, the division can be based on |
| A. | simple body or a complex body |
| B. | being a woody or herbaceous |
| C. | perennials or biennials |
| D. | environmental factors |
| Answer» D. environmental factors | |
| 23. |
Plants which live under water obtain oxygen from dissolved oxygen in water by |
| A. | Concentration gradient |
| B. | osmosis |
| C. | diffusion |
| D. | active transport |
| Answer» D. active transport | |
| 24. |
Capacity of human blood to carry oxygen is raised up to 75 times by |
| A. | white blood cells |
| B. | platelets |
| C. | hemoglobin |
| D. | coagulants |
| Answer» D. coagulants | |
| 25. |
Opening of larynx is called |
| A. | glottis |
| B. | epiglottis |
| C. | vocal cords |
| D. | soft palate |
| Answer» B. epiglottis | |
| 26. |
Efficient respiration is done in Hydra by help of |
| A. | nematocysts |
| B. | enteron |
| C. | tentacles |
| D. | dendrites |
| Answer» C. tentacles | |
| 27. |
Breakdown of alveoli is called |
| A. | asthma |
| B. | tuberculosis |
| C. | emphysema |
| D. | diarrhea |
| Answer» D. diarrhea | |
| 28. |
Food substances like starch can be stored in |
| A. | vascular bundles |
| B. | epidermis |
| C. | cuticle |
| D. | pith |
| Answer» E. | |
| 29. |
Unlimited growth which expands by invasion and metastasis is |
| A. | carcinoma |
| B. | tuberculosis |
| C. | polio |
| D. | TB |
| Answer» B. tuberculosis | |
| 30. |
Muscles fibers have iron containing protein called |
| A. | hemoglobin |
| B. | myoglobin |
| C. | globulin |
| D. | cytoglobin |
| Answer» C. globulin | |
| 31. |
RuBP is a molecule which act as a/an |
| A. | donator |
| B. | acceptor |
| C. | transporter |
| D. | medium |
| Answer» C. transporter | |
| 32. |
Specialized shoot bearing the reproductive organs in flowering plants is called as |
| A. | branch |
| B. | vegetative Bud |
| C. | flower |
| D. | Shoot apex |
| Answer» D. Shoot apex | |
| 33. |
In condition of low oxygen concentration, oxyhaemoglobin is |
| A. | stable |
| B. | unstable |
| C. | transitional |
| D. | None of the Above |
| Answer» C. transitional | |
| 34. |
Lungs are |
| A. | elastic |
| B. | spongy |
| C. | hard |
| D. | Both a and b |
| Answer» E. | |
| 35. |
Scientifically, breathing is a/an |
| A. | chemical process |
| B. | biochemical process |
| C. | thermal process |
| D. | redox process |
| Answer» B. biochemical process | |
| 36. |
Respiration is a/an |
| A. | chemical process |
| B. | mechanical process |
| C. | electrical process |
| D. | oxidation process |
| Answer» B. mechanical process | |
| 37. |
Lungs of frog are fully expanded like |
| A. | gases |
| B. | balloon |
| C. | ball |
| D. | Both a and b |
| Answer» C. ball | |
| 38. |
Growth of mycobacterium is accelerated in |
| A. | nutritious conditions |
| B. | hygienic conditions |
| C. | unhygienic conditions |
| D. | malnutrition |
| Answer» E. | |
| 39. |
Water is 50 times more viscous than |
| A. | oil |
| B. | alcohol |
| C. | gases |
| D. | solid |
| Answer» D. solid | |
| 40. |
Exchange of gasses through diffusion takes place when there is a difference in |
| A. | partial pressure |
| B. | liquid pressure |
| C. | hydraulic pressure |
| D. | concentration gradient |
| Answer» B. liquid pressure | |
| 41. |
After gaseous exchange, air is removed by process of |
| A. | inhalation |
| B. | inspiration |
| C. | exhalation |
| D. | All of the Above |
| Answer» D. All of the Above | |
| 42. |
Photorespiration depend upon |
| A. | heat |
| B. | light |
| C. | chemical |
| D. | Enzyme |
| Answer» C. chemical | |
| 43. |
General names for group of diseases is |
| A. | mycobacterium |
| B. | tuberculosis |
| C. | mycobacterium-tuberculosis |
| D. | tuberculositic virus |
| Answer» D. tuberculositic virus | |
| 44. |
Maximum oxygen can be absorbed at a level of |
| A. | sea |
| B. | beach |
| C. | pond |
| D. | dam |
| Answer» B. beach | |
| 45. |
Subdivision of tracheae into fine thin wall tubules which are called |
| A. | Rosaceae |
| B. | Poaceae |
| C. | Solanaceae |
| D. | Acacia |
| Answer» B. Poaceae | |
| 46. |
Aphids feed on plant juices through their |
| A. | penetrators |
| B. | sharp claws |
| C. | proboscis |
| D. | long beaks |
| Answer» D. long beaks | |
| 47. |
There is no involvement of blood in transport of gases in |
| A. | fish |
| B. | human |
| C. | reptiles |
| D. | cockroach |
| Answer» E. | |
| 48. |
Ten pair of apertures in tracheal trunk of cockroach is called |
| A. | tracheaoles |
| B. | tracheae |
| C. | spiracles |
| D. | gizzard |
| Answer» D. gizzard | |
| 49. |
Inflammatory chemicals which give rise to severe contractions of bronchioles in asthma are |
| A. | peroxisomes |
| B. | amino acids |
| C. | histamines |
| D. | nicotine |
| Answer» D. nicotine | |
| 50. |
Organ which lie ventral to esophagus extending in chest cavity is a tubular structure called |
| A. | intestine |
| B. | trachea |
| C. | glottis |
| D. | lungs |
| Answer» C. glottis | |