This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 14 Ecosystem – Quiz 26 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 14 Ecosystem Quiz 26 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Animals that eat dead animals are called as ..... A) Decomposers. B) Scavengers. C) Top carnivores. D) Herbivores. Show Answer Correct Answer: B) Scavengers. 2. Series of steps in which organisms transfer energy by eating and being eaten A) Foodweb. B) Consumer. C) Food chain. D) Omnivore. Show Answer Correct Answer: C) Food chain. 3. Impact last five years or less A) Short term impact. B) Long term impact. C) All the above. D) None of the above. Show Answer Correct Answer: A) Short term impact. 4. Which of the following is NOT a consumer A) Grass. B) Dog. C) Shark. D) Fish. Show Answer Correct Answer: A) Grass. 5. What can cause changes in ecosystems? A) Seasonal changes only. B) None of the above. C) Permanent shifts only. D) Both temporary shifts and permanent changes. Show Answer Correct Answer: D) Both temporary shifts and permanent changes. 6. 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? A) Mosses. B) Wildflowers. C) Hardwood trees. D) Evergreen shrubs. Show Answer Correct Answer: A) Mosses. 7. What did the invention of microscopes lead to the discovery of? A) Planets and stars. B) Bacteria, cells, and antibiotics. C) Electricity and magnetism. D) Dinosaurs and fossils. Show Answer Correct Answer: B) Bacteria, cells, and antibiotics. 8. What is the relationship between temperature and enzyme activity? A) Enzyme activity decreases with increasing temperature. B) Enzyme activity is unaffected by temperature. C) Enzyme activity increases with increasing temperature up to a point, then decreases. D) Enzyme activity is highest at freezing temperatures. Show Answer Correct Answer: C) Enzyme activity increases with increasing temperature up to a point, then decreases. 9. How are primary consumers different from secondary consumers? A) Primary consumers eat only plants; secondary consumers eat other consumers. B) Primary consumers eat other consumers; secondary consumers eat only plants. C) Primary consumers eat plants and other consumers; secondary consumers eat plants and decompose matter. D) . Primary consumers eat plants and decompose matter; secondary consumers eat plants and other consumers. Show Answer Correct Answer: A) Primary consumers eat only plants; secondary consumers eat other consumers. 10. 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. 11. What is composed of several food chains in an ecosystem that intersect and depend on one another? A) Niche. B) Energy pyramid. C) Trophic level. D) Food web. Show Answer Correct Answer: D) Food web. 12. Ecosystem is a balanced system created by organisms which do not just interact ..... but also interact ..... A) Among their species with other species. B) With each other with non-living things. C) With living things with non-living things. D) With each other with the environment. Show Answer Correct Answer: B) With each other with non-living things. 13. Photosynthesis takes place in organelles in the plant cell that are called A) Chloroplasts. B) Mitochondria. C) Reticulum. D) Vacuoles. Show Answer Correct Answer: A) Chloroplasts. 14. 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. 15. One of the main causes of biodiversity loss is? A) Habitat destruction. B) Invasive species. C) Climate change. D) Reforestation. Show Answer Correct Answer: A) Habitat destruction. 16. 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. 17. 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) Community. C) Ecosystem. D) Biome. Show Answer Correct Answer: A) Population. 18. Which organelle gives plants their green color and is responsible for taking in sunlight to provide energy for photosynthesis? A) Mitochondria. B) Nucleus. C) Ribosome. D) Chloroplast. Show Answer Correct Answer: D) Chloroplast. 19. Energy transfer is less efficient because some energy is lost as ..... A) Heat. B) Light. C) Sound. D) Movement. Show Answer Correct Answer: A) Heat. 20. 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. 21. 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. 22. The council says that planting new trees will increase biodiversity in the area.What is the definition of biodiversity?Tick ONE box. A) The arrival of new predators in an ecosystem. B) The evolution of new species by natural selection. C) The recycling of carbon in the environment. D) The variety of different species of organisms in an ecosystem. Show Answer Correct Answer: D) The variety of different species of organisms in an ecosystem. 23. Fill in the blank:A ..... is a graphical representation showing the biomass at each trophic level. A) Biomass. B) Trophic level. C) Pyramid of biomass. D) Energy flow. Show Answer Correct Answer: C) Pyramid of biomass. 24. What percentage of plant species in Australia are endemic? A) 80%. B) 50%. C) 60%. D) 70%. Show Answer Correct Answer: A) 80%. 25. What type of graph represents exponential population growth? A) A fluctuating graph. B) W-shaped curve. C) S-shaped curve. D) J-shaped curve. Show Answer Correct Answer: D) J-shaped curve. ← PreviousNext →Related 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 8Class 12 Biology Chapter 14 Ecosystem Quiz 9Class 12 Biology Chapter 14 Ecosystem Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books