This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 14 Ecosystem – Quiz 17 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 14 Ecosystem Quiz 17 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What are limiting factors? A) The maximum number of organisms an area can sustain. B) Scarce resources that limit the size of a population. C) Conditions that limit how much energy flows to the next trophic level. D) How diverse the populations of a community are. Show Answer Correct Answer: B) Scarce resources that limit the size of a population. 2. Cellular Respiration occurs in what cell organelle? A) Chloroplast. B) Cytoplasm. C) Mitochondria. D) Animal. Show Answer Correct Answer: C) Mitochondria. 3. How much energy passes throw each Trophic Level A) 10%. B) 100%. C) 20%. D) 50%. Show Answer Correct Answer: A) 10%. 4. Which organism below is NOT an example of a decomposer? A) Leaves. B) Mushroom. C) Worm. D) None of the above. Show Answer Correct Answer: A) Leaves. 5. Consumers are ..... A) Heterotrops. B) Autotrophs. C) All the above. D) None of the above. Show Answer Correct Answer: B) Autotrophs. 6. First Trophic Level A) Producer. B) Primary Consumer. C) Secondary Consumer. D) Tertiary Consumer. Show Answer Correct Answer: A) Producer. 7. In a habitat, animals have a ..... , which is how they interact, get food and shelter. A) Niche. B) Ecosystem. C) Community. D) Population. Show Answer Correct Answer: A) Niche. 8. In a process called transpiration, plants get rid of excess water through pores in the leaves called stomata. This excess water is then released into the atmosphere as part of the water cycle. Which of the following terms best describes how the released water enters the atmosphere? A) Condensation. B) Precipitation. C) Evaporation. D) Capillary action. Show Answer Correct Answer: C) Evaporation. 9. What contains numerous producers and many consumers on several trophic levels A) Food chain. B) Food pyramid. C) Food niche. D) Food web. Show Answer Correct Answer: D) Food web. 10. How many species of eucalypts and acacias are there? A) Over 500 species. B) Over 600 species. C) Over 700 species. D) Over 800 species. Show Answer Correct Answer: D) Over 800 species. 11. Which is a non-living part of an ecosystem? A) Sunlight. B) Air. C) Water. D) All of these. Show Answer Correct Answer: D) All of these. 12. A graphic illustration that shows each trophic level and the amount of useable energy contained within. A) Food chain. B) Food web. C) Energy Pyramid. D) All of these. Show Answer Correct Answer: C) Energy Pyramid. 13. Ecosystem A) All the living and nonliving things in an area, and how they interact. B) A group of similar organisms that can breed and produce fertile offspring. C) The process by which plants and animals adapt to their environment over time. D) A large community of plants and animals that occupies a distinct region. Show Answer Correct Answer: A) All the living and nonliving things in an area, and how they interact. 14. The type of plankton that produces most of the food in an aquatic ecosystem is called A) Nekton. B) Benthos. C) Phytoplankton. D) Zooplankton. Show Answer Correct Answer: C) Phytoplankton. 15. Trees that shed their leaves in the dry season are found in which forest? A) Coniferous forests. B) Temperate Deciduous Forest. C) Tropical Evergreen Forest. D) Tropical Deciduous Forest. Show Answer Correct Answer: D) Tropical Deciduous Forest. 16. Which layer of the rainforest receives the most sunlight? A) The canopy. B) The understory. C) The forest floor. D) None of the above. Show Answer Correct Answer: A) The canopy. 17. When medium sized plant species such as shrubs colonize an area it is called: A) Primary Succession. B) Secondary Succession. C) Climax Community. D) Pioneer Species. Show Answer Correct Answer: B) Secondary Succession. 18. A community is concerned about the water quality of a nearby lake. Increased sedimentation in the lake is endangering the native habitat. The increased sedimentation is most likely caused by which of the following? A) Trees planted along the shore of the lake. B) Construction of homes along the lake. C) The amount of sunlight on the lake. D) The amount of fish in the lake. Show Answer Correct Answer: B) Construction of homes along the lake. 19. A decomposer does not have a mouth and ..... A) Eats meat/animals/heterotrophs only to get its energy. B) Eats dead or living tissues by using chemicals. C) Eats both plants/autotrophs and meat/animals/heterotrophs to get its energy. D) Eats dead/decaying organisms only to get its energy. Show Answer Correct Answer: B) Eats dead or living tissues by using chemicals. 20. These conditions enable organisms to find enough energy and nutrients to maintain homeostasis, to grow and reproduce A) Adaptation. B) Microclimate. C) Tolerance. D) Optimum Range. Show Answer Correct Answer: D) Optimum Range. 21. When an area is colonized by the largest most mature plants it can support, it is called: A) Primary Succession. B) Secondary Succession. C) Climax Community. D) Pioneer Species. Show Answer Correct Answer: C) Climax Community. 22. Which of the following muscle cell get tired easily? A) Smooth. B) Cardiac. C) Skeletal. D) Cardiac and smooth. Show Answer Correct Answer: C) Skeletal. 23. What is used to describe a competition between two different species? A) Interspecific. B) Tertiary consumer. C) Intraspecific. D) Secondary consumer. Show Answer Correct Answer: A) Interspecific. 24. All the organisms of one kind in a certain area. A) Community. B) Organism. C) Population. D) Species. Show Answer Correct Answer: C) Population. 25. Which of the following is not the biotic component of ecosystem A) Herbivores. B) Consumers. C) Soil. D) Decomposer. E) All the above. Show Answer Correct Answer: C) Soil. ← 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