This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Science > Biology > Class 12 Biology Chapter 14 Ecosystem – Quiz 11 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 14 Ecosystem Quiz 11 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following organisms is living? A) Flowers in a garden. B) Fire burning on a candle. C) Water in a fish tank. D) A photograph of your dog. Show Answer Correct Answer: A) Flowers in a garden. 2. What is composed of several food chains in an ecosystem that intersect and depend on one another? A) Energy pyramid. B) Trophic level. C) Niche. D) Food web. Show Answer Correct Answer: D) Food web. 3. Ecosystem is a balanced system created by organisms which do not just interact ..... but also interact ..... A) With each other with the environment. B) With living things with non-living things. C) With each other with non-living things. D) Among their species with other species. Show Answer Correct Answer: C) With each other with non-living things. 4. Photosynthesis takes place in organelles in the plant cell that are called A) Mitochondria. B) Chloroplasts. C) Reticulum. D) Vacuoles. Show Answer Correct Answer: B) Chloroplasts. 5. All food chains ..... A) Have more consumers than producers. B) Produce and use same amount of energy. C) Begin with a producer. D) Are unhealthy. Show Answer Correct Answer: C) Begin with a producer. 6. One of the main causes of biodiversity loss is? A) Invasive species. B) Climate change. C) Reforestation. D) Habitat destruction. Show Answer Correct Answer: D) Habitat destruction. 7. Click Here to Access the ReadingsGo to Reading 2According to READING 2, which plant makes up the largest percentage (%) of the African Buffalo's diet? A) Themeda triandra. B) Hyparrhenia filipendula. C) Pennisetum mezianum. D) Laudetia kagarensis. Show Answer Correct Answer: A) Themeda triandra. 8. A ..... is a group of individuals within the same species, within the same area, and that are capable of reproducing with one another. A) Population. B) Biome. C) Community. D) Ecosystem. Show Answer Correct Answer: A) Population. 9. Which organelle gives plants their green color and is responsible for taking in sunlight to provide energy for photosynthesis? A) Nucleus. B) Mitochondria. C) Chloroplast. D) Ribosome. Show Answer Correct Answer: C) Chloroplast. 10. Energy transfer is less efficient because some energy is lost as ..... A) Heat. B) Sound. C) Light. D) Movement. Show Answer Correct Answer: A) Heat. 11. There are other ways matter is cycled through earth. The two Nutrient Cycles are: A) Photosynthesis and Cellular Respiration. B) Nitrogen Cycle and Water Cycle. C) Autotrophs and Heterotrophs. D) None of the above. Show Answer Correct Answer: B) Nitrogen Cycle and Water Cycle. 12. What is the difference between a predator and a prey? A) Predators and prey are the same thing. B) Predators are smaller than prey. C) Predators are plants and prey are animals. D) Predators hunt and eat other animals, while prey are the animals that are hunted and eaten by predators. Show Answer Correct Answer: D) Predators hunt and eat other animals, while prey are the animals that are hunted and eaten by predators. 13. The council says that planting new trees will increase biodiversity in the area.What is the definition of biodiversity?Tick ONE box. A) The evolution of new species by natural selection. B) The arrival of new predators in an ecosystem. C) The variety of different species of organisms in an ecosystem. D) The recycling of carbon in the environment. Show Answer Correct Answer: C) The variety of different species of organisms in an ecosystem. 14. Fill in the blank:A ..... is a graphical representation showing the biomass at each trophic level. A) Biomass. B) Energy flow. C) Pyramid of biomass. D) Trophic level. Show Answer Correct Answer: C) Pyramid of biomass. 15. What percentage of plant species in Australia are endemic? A) 50%. B) 60%. C) 80%. D) 70%. Show Answer Correct Answer: C) 80%. 16. What type of graph represents exponential population growth? A) S-shaped curve. B) W-shaped curve. C) A fluctuating graph. D) J-shaped curve. Show Answer Correct Answer: D) J-shaped curve. 17. Why do pollutants BIOACCUMULATE? A) Because the concentration grows as you go higher up the food chain. B) Because the pollutant is in low quantities in the environment. C) Because the pollutant is easy to digest. D) Because the organism cannot break down / digest the pollutant once it is ingested. Show Answer Correct Answer: D) Because the organism cannot break down / digest the pollutant once it is ingested. 18. Third Trophic Level A) Secondary Consumer. B) Primary Consumer. C) Tertiary Consumer. D) Producer. Show Answer Correct Answer: A) Secondary Consumer. 19. What type of relationship exists between lichens and trees? A) Mutualism. B) Parasitism. C) Competition. D) Commensalism. Show Answer Correct Answer: D) Commensalism. 20. Which of the following describes tRNA A) Reads mRNA at the ribosome and matches correct amino acid. B) Sneaks into the nucleus to copy DNA. C) A part of the cell that holds genetic information. D) None of the above. Show Answer Correct Answer: A) Reads mRNA at the ribosome and matches correct amino acid. 21. Which factor is likely to increase population density? A) High birth and immigration rates. B) High death and emigration rates. C) Decreased food availability. D) Increased natural disasters. Show Answer Correct Answer: A) High birth and immigration rates. 22. What do you call those organisms that feed on dead plants and animals? An example of these are mushrooms A) Fungi. B) Bacteria. C) Virus. D) Grass. Show Answer Correct Answer: A) Fungi. 23. What does a herbivore primarily feed on in an ecosystem? A) Plants. B) Rocks. C) Meat. D) Water. Show Answer Correct Answer: A) Plants. 24. Herbivores are referred to as ..... consumer. A) Secondary. B) Primary. C) Tertiary. D) None of the above. Show Answer Correct Answer: B) Primary. 25. The benefits people gain from ecosystems A) Ecosystem services. B) Ecosystem disruption. C) Invasive species. D) None of the above. Show Answer Correct Answer: A) Ecosystem services. 26. The two factors that make up the ecosystem are: A) Biotic factors (living factors); abiotic factors (nonliving factors). B) Photosynthesis and cellular respiration. C) Carbon dioxide and oxygen. D) None of the above. Show Answer Correct Answer: A) Biotic factors (living factors); abiotic factors (nonliving factors). 27. These organisms cannot make their own food; they must eat something for energy A) Decomposer. B) Consumer. C) Producer. D) None of the above. Show Answer Correct Answer: B) Consumer. 28. Sunlight, pH of water, temperature, rocks, soil and air would all be ..... A) Abiotic. B) Ecosystems. C) Biotic. D) Habitats. Show Answer Correct Answer: A) Abiotic. 29. What is the classification level directly below domain? A) Phylum. B) Species. C) Kingdom. D) Genus. Show Answer Correct Answer: C) Kingdom. 30. Which type of symbiosis involves one species benefitting while the other is unaffected? +/0 A) Mutualism. B) Commensalism. C) Parasitism. D) None of the above. Show Answer Correct Answer: B) Commensalism. 31. Green plants are an example of photoautotrophs A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 32. An organism that converts energy of the sun into chemical energy. A) Omnivore. B) Carnivore. C) Herbivore. D) Producer. Show Answer Correct Answer: D) Producer. 33. What is another term that autotrophs are called? A) Herbivores. B) Producers. C) Heterotrophs. D) Consumers. Show Answer Correct Answer: B) Producers. 34. Food production, purifying water, storing carbon, and regulating pests are all examples of what? A) Biodiversity. B) Abiotic factors in ecosystems. C) Ecosystem services. D) Ecosystem resilience. Show Answer Correct Answer: C) Ecosystem services. 35. Which correctly shows the flow of energy to an apex predator? A) Herbivore $\rightarrow$ Producer $\rightarrow$ Sun $\rightarrow$ Carnivore. B) Apex predator $\rightarrow$ Carnivore $\rightarrow$ Herbivore $\rightarrow$ Sun. C) Producer $\rightarrow$ Sun $\rightarrow$ Herbivore $\rightarrow$ Predator. D) Sun $\rightarrow$ Producer $\rightarrow$ Herbivore $\rightarrow$ Carnivore $\rightarrow$ Apex predator. Show Answer Correct Answer: D) Sun $\rightarrow$ Producer $\rightarrow$ Herbivore $\rightarrow$ Carnivore $\rightarrow$ Apex predator. 36. Di dalam suatu ekosistem, jamur dan bakteri yang bersifat saprofit berperan sebagai ..... A) Karnivora. B) Produsen. C) Herbivora. D) Pengurai. Show Answer Correct Answer: D) Pengurai. 37. Extinction means: A) Succession. B) Adaptation. C) Migration. D) Species disappears. Show Answer Correct Answer: D) Species disappears. 38. If one organism benefits while the other is neither helped nor harmed in a relationship, it is an example of: A) Parasitism. B) Symbiosis. C) Commensalism. D) Mutualism. Show Answer Correct Answer: C) Commensalism. 39. Sistem organ / organ system2. sel / cell3. jaringan / tissue4. organ5. organismurutan organsisasi yang tepat adalah A) 2-3-4-1-5. B) 2-3-1-4-5. C) 2-4-1-3-5. D) 2-4-3-1-5. Show Answer Correct Answer: A) 2-3-4-1-5. 40. What's is an abiotic factor? A) A living thing. B) A non-iving thing. C) A producer. D) None of the above. Show Answer Correct Answer: B) A non-iving thing. 41. This biome covers 3/4 of the Earth's surface A) Ocean. B) Tundra. C) Lake. D) Deciduous Forrest. Show Answer Correct Answer: A) Ocean. 42. How can models help in conservation policy? A) By predicting the lottery numbers. B) By informing conservation policy with predictions. C) By entertaining the public. D) By creating video games. Show Answer Correct Answer: B) By informing conservation policy with predictions. 43. True or False:Bacteria are important in an ecosystem for breaking down dead and decaying matter. A) False. B) X. C) X. D) True. Show Answer Correct Answer: D) True. 44. Having a wide variety and lots of different species (like that in a rain forest) is called: A) Biodiversity. B) Species Richness. C) Systematics. D) Phylogeny. Show Answer Correct Answer: A) Biodiversity. 45. Below is an example of a simple food chain.Acorn $\rightarrow$ Squirrel $\rightarrow$ Fox $\rightarrow$ Mountain Lion What will most likely happen if squirrels are removed from the food chain? A) The mountain lion population will increase. B) The fox population will decrease. C) The trees will produce fewer acorns. D) The fox will eat acorns. Show Answer Correct Answer: B) The fox population will decrease. 46. An ecologist who studies how several species in an area interact with one another and with the abiotic parts of the environment is interested in the biological organization level called a(n) ..... A) Population. B) Community. C) Ecosystem. D) Organism. Show Answer Correct Answer: C) Ecosystem. 47. Lichen is a pioneer species in which type of succession? A) Primary. B) Secondary. C) Both. D) None of the above. Show Answer Correct Answer: A) Primary. 48. This is the study of interactions between organisms and the interactions that organisms have with their environment. A) Ecology. B) Commensalism. C) Biology. D) Evolution. Show Answer Correct Answer: A) Ecology. 49. The process by which a large habitat gets broken into small pieces by disturbance. A) Eutrophication. B) Habitat Fragmentation. C) Biome. D) Longitude. Show Answer Correct Answer: B) Habitat Fragmentation. 50. From an ecological perspective, everything living beings need to obtain from their environment is known as: A) Necessity. B) Demand. C) Resource. D) Requirement. Show Answer Correct Answer: C) Resource. 51. Which process do plants use to take in carbon dioxide? A) Photosynthesis. B) Fermentation. C) Cellular respiration. D) Transpiration. Show Answer Correct Answer: A) Photosynthesis. 52. The stable ecosystem that develops due to succession is called ..... A) Forest. B) Climax community. C) Niche. D) Habitat. Show Answer Correct Answer: B) Climax community. 53. The average global extinction rate for life calculated with all fossil evidence. A) Evolution. B) Background Extinction. C) Succession. D) Mass Extinction. Show Answer Correct Answer: B) Background Extinction. 54. What does a biogeochemical cycle involve? A) The movement of water in the atmosphere. B) The interactions of matter in the biosphere, geosphere, and atmosphere. C) The flow of energy in ecosystems. D) The growth of plant life. Show Answer Correct Answer: B) The interactions of matter in the biosphere, geosphere, and atmosphere. 55. Which adaptation do ferns, gymnosperms, and angiosperms have that mosses do not have? A) Vascular tissue. B) Flowers. C) Stomata. D) Chloroplasts. Show Answer Correct Answer: A) Vascular tissue. 56. Which of the following correctly orders the levels of organization of an ecosystem from simplest to most complex? A) Ecosystem, community, population, individual. B) Community, population, individual, ecosystem. C) Individual, population, community, ecosystem. D) Individual, community, population, ecosystem. Show Answer Correct Answer: C) Individual, population, community, ecosystem. 57. Which of the following is an aquatic habitat? A) Desert. B) Frozen Arctic. C) Tropical rainforest. D) Coral reef. Show Answer Correct Answer: D) Coral reef. 58. What makes a species invasive? A) Moving to a new ecosystem and taking resources from natives. B) Not having papers. C) Species that can't adapt. D) Plants that take up too much space. Show Answer Correct Answer: A) Moving to a new ecosystem and taking resources from natives. 59. A botanist is a scientist who studies ..... A) Plants. B) Dogs. C) Spaghetti. D) Animals. Show Answer Correct Answer: A) Plants. 60. Peristiwa makan dan dimakan dengan suatu urutan dan arah tertentu dalam suatu ekosistem disebut ..... A) Rantai makanan. B) Jaring-jaring makanan. C) Piramida makanan. D) Simbiosis. Show Answer Correct Answer: A) Rantai makanan. ← PreviousNext →Related QuizzesScience QuizzesClass 12 QuizzesClass 12 Biology Chapter 14 Ecosystem Quiz 1Class 12 Biology Chapter 14 Ecosystem Quiz 2Class 12 Biology Chapter 14 Ecosystem Quiz 3Class 12 Biology Chapter 14 Ecosystem Quiz 4Class 12 Biology Chapter 14 Ecosystem Quiz 5Class 12 Biology Chapter 14 Ecosystem Quiz 6Class 12 Biology Chapter 14 Ecosystem Quiz 7Class 12 Biology Chapter 14 Ecosystem Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books