MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the killing of aquatic life due to the depletion of oxygen because of the excessive growth of algae due to the over-abundance of phosphorous in the coastal areas called? |
| A. | Leaching |
| B. | Respiration |
| C. | Photosynthesis |
| D. | Eutrophication |
| Answer» E. | |
| 2. |
In which form do the producers directly provide phosphorous to detritus? |
| A. | Weathering |
| B. | Litterfall |
| C. | Fecal matter |
| D. | Salts |
| Answer» C. Fecal matter | |
| 3. |
The phosphate by weathering of rocks firstly becomes available to which organisms? |
| A. | Decomposers |
| B. | Consumers |
| C. | Producers |
| D. | Detritivores |
| Answer» D. Detritivores | |
| 4. |
Which of the following is known as the natural reservoir of phosphorous? |
| A. | Fossils |
| B. | Rocks |
| C. | Animals |
| D. | Water |
| Answer» C. Animals | |
| 5. |
Which biogenetic element is obtained from crystalline rocks? |
| A. | Argon |
| B. | Helium |
| C. | Phosphorous |
| D. | Magnesium |
| Answer» D. Magnesium | |
| 6. |
Which of the following is a major constituent of DNA and RNA? |
| A. | Calcium |
| B. | Cobalt |
| C. | Selenium |
| D. | Phosphorous |
| Answer» E. | |
| 7. |
Which of the biochemical cycle is without an atmospheric component? |
| A. | Nitrogen cycle |
| B. | Oxygen cycle |
| C. | Phosphorous cycle |
| D. | Carbon cycle |
| Answer» D. Carbon cycle | |
| 8. |
How do herbivores and other animals obtain phosphorous? |
| A. | Soil |
| B. | Rocks |
| C. | Water |
| D. | Plants |
| Answer» E. | |
| 9. |
Which one of the following is the simplified sequence of phosphorus cycling in a terrestrial ecosystem? |
| A. | Soil Producers Rock minerals Consumers Decomposers |
| B. | Rock minerals Soil Producers Consumers Decomposers |
| C. | Rock minerals Decomposers Producers Consumers |
| D. | Decomposers Rock minerals Consumers Producers |
| Answer» C. Rock minerals Decomposers Producers Consumers | |
| 10. |
How is the gaseous exchange of phosphorus between organisms and the environment? |
| A. | Maximum |
| B. | Moderate |
| C. | Negligible |
| D. | No exchange |
| Answer» D. No exchange | |
| 11. |
Which element is not released during respiration in the atmosphere? |
| A. | Nitrogen |
| B. | Cobalt |
| C. | Carbon |
| D. | Phosphorous |
| Answer» E. | |
| 12. |
Who is the natural reservoir of phosphorous? |
| A. | Atmospheric gases |
| B. | Rocks |
| C. | Water |
| D. | Dead organisms |
| Answer» C. Water | |
| 13. |
Which of the following component is used to make shells, bones, and teeth by animals? |
| A. | Phosphorous |
| B. | Sodium |
| C. | Gallium |
| D. | Argon |
| Answer» B. Sodium | |
| 14. |
Which one of the following is a major constituent of biological membranes, nucleic acids, and cellular energy transfer systems? |
| A. | Potassium |
| B. | Phosphorous |
| C. | Selenium |
| D. | Cobalt |
| Answer» C. Selenium | |