This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 14 Ecosystem – Quiz 13 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 14 Ecosystem Quiz 13 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What do you call an organism that can make its own food? A) Autotroph. B) Heterotroph. C) Primary consumer. D) Decomposer. Show Answer Correct Answer: A) Autotroph. 2. Heterotrophs do not contain ..... A) Primary consumers. B) Producers. C) Secondary consumers. D) Top carnivores. Show Answer Correct Answer: B) Producers. 3. A ..... is defined as a carnivore that feeds on the bodies of dead organisms A) Consumer. B) Scavenger. C) Decomposer. D) None of the above. Show Answer Correct Answer: B) Scavenger. 4. Which of the following statements describes one way that energy is transferred in a food web? A) Energy is cycled between producers. B) Producers store energy made by animals. C) Consumers obtain energy directly from sunlight. D) Plants provide energy to consumers. Show Answer Correct Answer: D) Plants provide energy to consumers. 5. Phytoplankton A) Microscopic producers in the ocean that use photosynthesis and form the base of aquatic food webs. B) Large marine animals that feed on smaller fish. C) Bacteria that decompose organic matter in the ocean. D) Coral reefs that provide habitat for marine life. Show Answer Correct Answer: A) Microscopic producers in the ocean that use photosynthesis and form the base of aquatic food webs. 6. What role does climate change play in ecosystems according to the video? A) It stabilizes ecosystems. B) It has no significant impact. C) It contributes to mass extinction events. D) It increases biodiversity. Show Answer Correct Answer: C) It contributes to mass extinction events. 7. Producers are called ..... A) Autotrophs. B) Heterotrophs. C) All the above. D) None of the above. Show Answer Correct Answer: A) Autotrophs. 8. When birth rate is high and death rate is low ..... A) Population increases. B) Population decreases. C) Population stays the same. D) All of these. Show Answer Correct Answer: A) Population increases. 9. What is the term used to describe a community of living organisms and their physical environment? A) Biome. B) Ecosystem. C) Habitat. D) Niche. Show Answer Correct Answer: B) Ecosystem. 10. Which type of competition is more intense? A) Intraspecific. B) Interspecific. C) All the above. D) None of the above. Show Answer Correct Answer: A) Intraspecific. 11. Which symbiotic relationship is when one organism benefits and the other is not impacted (positively or negatively)? A) Predation. B) Mutualism. C) Commensalism. D) Parasitism. Show Answer Correct Answer: C) Commensalism. 12. Which plant organ is primarily responsible for photosynthesis? A) Roots. B) Stems. C) Leaves. D) Flowers. Show Answer Correct Answer: C) Leaves. 13. An omnivore is an organism that ..... A) Eats plants only. B) Eats meat only. C) Eats meat and plants. D) Produces its own energy via photosynthesis. Show Answer Correct Answer: C) Eats meat and plants. 14. Consists of all the living and non-living things in a given area that interact with each other. A) Ecology. B) Environment. C) Ecosystem. D) Organsim. Show Answer Correct Answer: C) Ecosystem. 15. A relationship where both species benefit A) Mutualism. B) Commensalism. C) Parasitism. D) Adaptation. Show Answer Correct Answer: A) Mutualism. 16. Bamboo A) Biotic. B) Abiotic. C) All the above. D) None of the above. Show Answer Correct Answer: A) Biotic. 17. The living or once living parts of an organism's environment are called its ..... A) Community. B) Habitat. C) Biotic factors. D) Abiotic factors. Show Answer Correct Answer: C) Biotic factors. 18. Di bawah ini adalah contoh hewan herbivora, karnivora, dan omnivora berturut-turut adalah ..... A) Kambing, singa, ayam. B) Kambing, kelinci, serigala. C) Singa, kambing, ayam. D) Ayam, serigala, kambing. Show Answer Correct Answer: A) Kambing, singa, ayam. 19. What is a community? A) A group of producers and consumers living and interacting in an area. B) A group of species living and interacting in an area. C) A group of organisms living and interacting in an area. D) A group of populations living and interacting in an area. Show Answer Correct Answer: D) A group of populations living and interacting in an area. 20. Which of the following statements about radioactive decay is true? A) All isotopes decay at the same rate. B) The rate of radioactive decay increases with time. C) Radioactive decay occurs at a regular measurable rate for each isotope. D) The rate of decay for most isotopes is unknown. Show Answer Correct Answer: C) Radioactive decay occurs at a regular measurable rate for each isotope. 21. What is an abiotic factor? A) A living organism in an ecosystem. B) A non-living component of an ecosystem, such as temperature, water, and soil. C) A type of biotic factor that affects living organisms. D) A chemical substance that is harmful to the environment. Show Answer Correct Answer: B) A non-living component of an ecosystem, such as temperature, water, and soil. 22. Simple model for showing how matter and energy move through an ecosystem A) Food web. B) Trophic levels. C) Food chain. D) Habitat. Show Answer Correct Answer: C) Food chain. 23. Biodiversity is important because: A) It increases extinction. B) It increases ecosystem stability. C) Stops succession. D) Limits energy flow. Show Answer Correct Answer: B) It increases ecosystem stability. 24. Which species are best able to occupy the same space? A) Those that eat the same foods. B) Those that compete for the same resources. C) Those that have a predator/prey relationship. D) Those whose needs differ significantly from each other. Show Answer Correct Answer: D) Those whose needs differ significantly from each other. 25. True or False:Succession occurs in most cases by each species altering its environment in ways to make it easier for other species to compete for resources and survive. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. ← 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