14000+ MCQs Environment & Ecology(Environment and Ecology)
Total Questions:- 50
Time:- 30 Minutes
MCQ Pattern
Date:- 02/11/2026
1. Which one of the following is the correct sequence of a marine food chain?
2. Environment is a composite state of
3. Ecology is the study of the relationship between
4. Assertion (A) People in polar areas live in houses made up of ice. Reason (R) Climate has impact on human life.
6. The large ecological area that is characterized by its climate, soil type, and vegetation and by dominant plants and animals is called
7. What is the thin layer of gases around the Earth?
8. Which one of the following is the best description of the term ecosystem?
9. In an ecotone, the species which become abundant are called
10. An example of ‘Lentic Habitat’ in the freshwater community is
11. Assertion (A) Environment is the store of immense force. Reason (R) Environmental elements are created as a result of environmental forces and processes.
12. In dry regions, the leaf size of a tree becomes smaller. It is so to
13. The extension of the Tropical Evergreen biome is
14. Transfer of energy from one organism to another in an ecosystem takes place in a
15. All components and individuals in an ecosystem are
16. Which of the following constitutes a food chain?
17. Consider the following statement regarding an ecosystem.
I. A.G. Tansley had used the word ecosystem for the first time.
II. The organisms producing their own food are called as Autotrophs.
III. The consumers prepare their food with the help of photosynthesis.
IV. Decomposers convert inorganic material into organic one.
Which of the statements given above are correct?
18. Which one among the following covers the highest percentage of forest area in the world?
19. Consider the following statements:
I. Interactions between the two organisms in which one organism kills and feeds on the second organism, is called parasitism.
II. Mutualism is the way two organisms of different species biologically interact in a relationship in which each individual derives a fitness benefit.
Which of the statements given above is/are true?
20. Which one of the following is the largest ecosystem of the world?
21. The functioning of an ecosystem involves
22. The 10 per cent Law is related with
23. A biological community in its environment such as a pond, an ocean, forest, or even an aquarium is known as
24. The cycling of elements in an ecosystem is called
25. Which of the following statements is true about Bionomics?
I. It means “management of life.”
II. It is synonymous with ecology.
III. It stresses on the value of natural systems which influence human systems.
26. The correct order in the food chain of the various components of a terrestrial grass ecosystem is
27. Which one of the following ecosystem covers the largest areas of the earth’s surface?
28. Consider the following statements:
I. In a single habitat there can be many niches which can sustain many organisms.
II. Every species has its specialized niche.
III. In ecotone there are few species which are specialized for that ecotone.
Which among the statements given above is/are correct?
29. Study of a single species and the environmental factors in its habitat is called
30. The rapid rate of decline in the vulture population in India is mainly due to
31. Environment is an indivisible unit which is created by
32. The mechanism of an Ecosystem involves
33. Which one of the following terms describes not only the physical space occupied by an organism, but also its functional role in the community of organisms?
34. If the amount of energy or biomass or the population of organisms at successive trophic levels is plotted as horizontal bars one above the other, it produces a
35. Which of the following is an artificial ecosystem?
36. In the context of ecosystem productivity, marine upwelling zones are important as they increase the marine productivity by bringing the:
I. decomposer micro-organisms to the surface.
II. nutrients to the surface.
III. bottom-dwelling organisms to the surface.
Which of the statements given above is/are correct?
37. Which among the following statements regarding ecotone is/are correct?
38. Which one of the following is not a major cause of Wildlife Extinction?
39. Who among the following proposed the deterministic concept in the context of the man-environment relationship?
40. Who among the following first enunciated the concept of ecological pyramids in 1927?
41. When we eat the flesh of goat, we are a
42. The actual location or place where an organism lives is called
43. Which among the following is correct regarding an ecosystem?
44. Which of the following is not correct about an ecosystem?
45. Who of the following used the term ‘deep ecology’ for the first time?
46. In a food chain, the solar energy utilized by plants is only
47. If a tropical rainforest is removed, it does not regenerate quickly as compared to a tropical deciduous forest. This is because
48. Among the biotic components of the ecosystem, the producer system is
49. The ecological pyramid that is always upright is
50. The flow of energy and nutrients in the biogeochemical cycle mainly takes place through