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Ecology — MCQs Biology

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1. Ecology is the study of:





2. A community in ecology refers to:





3. An ecosystem includes:





4. Producers in an ecosystem are:





5. Primary consumers are:





6. Secondary consumers are:





7. Tertiary consumers feed on:





8. Decomposers are important because they:





9. Detritivores feed on:





10. The food chain represents:





11. A food web represents:





12. Biomass refers to:





13. Ecological pyramid of numbers shows:





14. Ecological pyramid of biomass shows:





15. Ecological pyramid of energy shows:





16. The efficiency of energy transfer between trophic levels is:





17. Biogeochemical cycles involve:





18. The carbon cycle includes:





19. Nitrogen fixation is carried out by:





20. Denitrification converts:





21. Phosphorus cycle does not involve:





22. Oxygen in the environment is replenished by:





23. Aquatic ecosystems are classified into:





24. Freshwater ecosystems include:





25. Marine ecosystems include:





26. Terrestrial ecosystems include:





27. Biomes are:





28. Temperate forests are characterized by:





29. Desert ecosystems are characterized by:





30. Grasslands are dominated by:





31. Tundra ecosystems have:





32. Coral reefs are formed by:





33. Keystone species are:





34. Invasive species are:





35. Succession in ecology refers to:





36. Primary succession occurs on:





37. Secondary succession occurs on:





38. Climax community is:





39. Biodiversity refers to:





40. Genetic diversity is:





41. Species diversity refers to:





42. Ecosystem diversity refers to:





43. Endangered species are:





44. Conservation biology aims to:





45. Ecological footprint measures:





46. Greenhouse gases include:





47. Global warming is primarily caused by:





48. Acid rain is caused by:





49. Ozone layer depletion is due to:





50. Sustainable development aims to:





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