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. |
Whose work is to protect the land from floods, remove sediments and other pollutants and recharge groundwater? |
| A. | Wetlands |
| B. | Oceans |
| C. | Rivers |
| D. | Forests |
| Answer» B. Oceans | |
| 2. |
Which of the following shows a one-way passage in an ecosystem? |
| A. | Potassium |
| B. | Carbon |
| C. | Phosphorous |
| D. | Free energy |
| Answer» E. | |
| 3. |
Which of the following statement is correct about pollination? |
| A. | The wind is not an agent of pollination |
| B. | Insects can t pollinate |
| C. | Fruit formation occurs after pollination |
| D. | Fertilization occurs before pollination |
| Answer» C. Fruit formation occurs after pollination | |
| 4. |
What is released as a byproduct of photosynthesis? |
| A. | CO<sub>2</sub> |
| B. | NH<sub>4</sub> |
| C. | O<sub>2</sub> |
| D. | H<sub>2</sub> |
| Answer» D. H<sub>2</sub> | |
| 5. |
How do green plants fix CO2? |
| A. | Respiration |
| B. | Photosynthesis |
| C. | Fertilization |
| D. | Pollination |
| Answer» C. Fertilization | |
| 6. |
Which of the following are ecological services? |
| A. | O<sub>2</sub> fixation, CO<sub>2</sub> release, and pollution |
| B. | Nitrogen fixation and pollution |
| C. | CO<sub>2</sub> fixation, O<sub>2</sub> release, and pollination |
| D. | CO<sub>2</sub> fixation, fertilization, and the release of sodium |
| Answer» D. CO<sub>2</sub> fixation, fertilization, and the release of sodium | |
| 7. |
Out of the total cost of various ecosystem services, how much is the cost of climate regulation and habitat for wildlife? |
| A. | 20 % each |
| B. | 10 % each |
| C. | 50 % each |
| D. | 6 % each |
| Answer» E. | |
| 8. |
Out of the total cost of various ecosystem services, how much is the cost of recreation and nutrient cycling? |
| A. | 50 % |
| B. | 88 % |
| C. | > 10 % |
| D. | < 20 % |
| Answer» D. < 20 % | |
| 9. |
Out of the total cost of various ecosystem services, how much is the cost of the soil formation? |
| A. | 2 percent |
| B. | 90 percent |
| C. | 70 percent |
| D. | 50 percent |
| Answer» E. | |
| 10. |
Why are the fundamental ecosystems services largely taken for granted? |
| A. | Because they are expensive |
| B. | Because they are free |
| C. | Because they are exploited |
| D. | Because they are highly-priced |
| Answer» C. Because they are exploited | |
| 11. |
According to the researchers, what is the average price tag of these fundamental ecosystem services? |
| A. | US $ 300 trillion a year |
| B. | US $ 33 trillion a year |
| C. | US $ 5 trillion a year |
| D. | US $ 1000 trillion a year |
| Answer» D. US $ 1000 trillion a year | |
| 12. |
Who has very recently tried to put price tags on nature s life-support services? |
| A. | Rudolf Virchow and his colleagues |
| B. | Gregor Mendel and his colleagues |
| C. | Robert Brown and his colleagues |
| D. | Robert Constanza and his colleagues |
| Answer» E. | |
| 13. |
Which of the following ecosystem helps in the pollination of crops? |
| A. | Unfit ecosystem |
| B. | Healthy ecosystem |
| C. | Bad ecosystem |
| D. | Unhealthy ecosystem |
| Answer» C. Bad ecosystem | |
| 14. |
What are the products of ecosystem processes named? |
| A. | Ecological services |
| B. | Ecological succession |
| C. | Ecological issues |
| D. | Ecological cycle |
| Answer» B. Ecological succession | |
| 15. |
What is the base for economic, environmental and aesthetic goods and services? |
| A. | Unhealthy ecosystem |
| B. | Healthy ecosystem |
| C. | Bad ecosystem |
| D. | Convergent ecosystem |
| Answer» C. Bad ecosystem | |