MCQOPTIONS
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MCQOPTIONS
This section includes 56 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Role of bacteria in carbon cycle is [CBSE PMT 1998] |
| A. | Photosynthesis |
| B. | Chemosynthesis |
| C. | Breakdown of organic compounds |
| D. | Assimilation of nitrogen compounds |
| Answer» D. Assimilation of nitrogen compounds | |
| 52. |
Volcano eruption disturbs |
| A. | Phosphorus cycle |
| B. | Nitrogen cycle |
| C. | Carbon cycle |
| D. | Sulphur cycle |
| Answer» B. Nitrogen cycle | |
| 53. |
Phosphorus is mostly found in rocks in combination with |
| A. | Calcium |
| B. | Iron |
| C. | Aluminium |
| D. | All of these |
| Answer» E. | |
| 54. |
The process of evapo-transpiration and precipitation is known as |
| A. | Carbon cycle |
| B. | Hydrological cycle |
| C. | Nitrogen cycle |
| D. | All of these |
| Answer» C. Nitrogen cycle | |
| 55. |
For recycling of materials which one is most necessary |
| A. | Producers |
| B. | Consumers |
| C. | Decomposers |
| D. | None of above |
| Answer» D. None of above | |
| 56. |
In biogeochemical cycles, chemicals pass through |
| A. | Livings |
| B. | Livings and non-livings |
| C. | From non-living to living and living to non-living |
| D. | None of the above |
| Answer» D. None of the above | |