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Class 12 Biology Chapter 14 Ecosystem Quiz 10 (60 MCQs)

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1. A species that plays a vital role in maintaining structure, stability, and diversity in an ecosystem.
2. What is an example of a carnivore that feeds on the bodies of dead organisms
3. In terrestial ecosystem X, Y and Desert ecosystems are three types of ecosystems. Here X and Y are
4. How are deer and wolves classified?
5. Heterotrophic organisms are those that produce their own food and energy.
6. Humans Change Ecosystems to better fit their needs
7. Which is the correct, balanced equation for CELLULAR RESPIRATION?
8. What are the benefits of maintaining a balanced ecosystem?
9. An ecosystem is a system consisting of:
10. Which of the following is a consequence of uncontrolled cell growth?
11. What are the branching and interrelationships BETWEEN food chains in a biotic community an example of?
12. A snake that eats a mouse, which in turn eats grass, is an example of a:
13. Energy flows in a food chain as one organism consumes another for food. What happens to this energy as it moves up the food chain from one level to the next?
14. A species that is NOT native to a particular region and is harmful to the ecosystem is called
15. A sweet, sugary liquid made inside flowers. Insects and hummingbirds eat it.
16. What do you call all of the living things AND all of the non-living things together in the same environment?
17. If there are 1, 000 kilocalories of energy available at the producer level, how much energy will be available at the 3rd consumer level
18. What two parts does a plant cell have that an animal cell does not?
19. What is ecological tolerance?
20. Which of the following is a 2nd level consumer?acorn$\rightarrow$ squirrel $\rightarrow$ owl $\rightarrow$ mushroom
21. True or False:Herbivores impact the plant population
22. Name one example of a biome.
23. True or False:Predator Prey relationships do not affect populations
24. The first species to colonize an area that tend to be small, tough, and require few nutrients:
25. What term describes the range of conditions that an organism can endure and survive in?
26. Why is biodiversity important for the health of an ecosystem?
27. How does a lack of vascular tissue affect mosses?
28. A very large ecosystem that is made up of many smaller ecosystem such as rainforest or grasslands
29. Several food chains interconnected together create a .....
30. When organisms of different species interact over things such as food it is described as:
31. What limits the length of a food chain in an ecosystem?
32. Some herbivore-plant interactions evolved through a series of reciprocal evolutionary adaptations in both species. The process is called
33. Carla claims that a strain of rose bushes is resilient to temperatures as low as 5 degrees C. Which statement about rose bushes of this strain can be inferred from Carla's claim?
34. A short plant with a thick, fleshy stem, extensive roots, and a short blooming period would MOST likely be found in which of the following environments?
35. Explain the concept of a food chain in an ecosystem.
36. Living Organisms that decompose animals and plants are called
37. In the woods, there are hawks and robins. They both try to occupy the same niche by competing for worms as the only source of food in that same area at that same time. The hawks outcompete the robins, and the robins are forced to leave that area. This is an example of:
38. The physical part of the ecosystem that meets the needs of an organism is called:
39. Which of the following explains why producers are always found at the beginning of a food chain?
40. When a New England farm is abandoned, its formerly plowed fields first become weedy meadows, then shrubby areas, and finally forest. This sequence of plant communities is an example of
41. Can cause extinctions of organism
42. Place where an organism spends its life
43. Which of the following organisms is a consumer?
44. Rainfall in a tropical evergreen forest is
45. Which best describes the role of a producer in an ecosystem?
46. More successful ecosystems will have:
47. What is the role of decomposers in the biogeochemical cycles?
48. What are consumers that eat only plants
49. Which human activity has had the greatest impact on climate change?
50. Which statement is true for BOTH food chains and food webs?
51. What is the word equation for Cellular Respiration?
52. States that no 2 species can occupy the same niche at the same time
53. Animals that eat dead animals are called as .....
54. Impact last five years or less
55. Which of the following is NOT a consumer
56. What can cause changes in ecosystems?
57. A volcano erupts and covers the surrounding area with lava and volcanic ash. As the ecosystem begins to recover, which type of plant will MOST likely be the first to colonize land in the area surrounding the eruption?
58. What did the invention of microscopes lead to the discovery of?
59. What is the relationship between temperature and enzyme activity?
60. How are primary consumers different from secondary consumers?
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