This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 14 Ecosystem – Quiz 48 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 14 Ecosystem Quiz 48 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Biodiversity is best described as the ..... A) All of the living organisms in an area. B) The place where an animal lives. C) Total variety of all living things on Earth. D) Number of organisms in an area. Show Answer Correct Answer: C) Total variety of all living things on Earth. 2. In the food chain below, which is the producer?grass $\rightarrow$ mouse $\rightarrow$ snake $\rightarrow$ hawk A) Grass. B) Mouse. C) Snake. D) Hawk. Show Answer Correct Answer: A) Grass. 3. What kind of Ecosystem is known as sustainable? A) The one in which all species are in balance. B) The one in which there are no animals. C) The one in which animals feed on each other. D) None of the above. Show Answer Correct Answer: A) The one in which all species are in balance. 4. Humans caused extinctions by hunting; CITES helps by: A) Farming. B) Banning trade in endangered species. C) Migration. D) Energy loss. Show Answer Correct Answer: B) Banning trade in endangered species. 5. Explain the effects of pollution on ecosystems. A) Pollution only affects human health, not ecosystems. B) Ecosystems thrive in polluted environments. C) Pollution disrupts ecosystems by harming species, degrading habitats, and altering natural processes. D) Pollution has no impact on ecosystems. Show Answer Correct Answer: C) Pollution disrupts ecosystems by harming species, degrading habitats, and altering natural processes. 6. When an environment has reached its carrying capacity for a certain population, which of the following is true? A) Growth and immigration rate is equal to death and emigration rate. B) Growth and immigration rate is greater than death and emigration rate. C) Growth and immigration rate is less than death and emigration rate. D) Growth rate is exponential. Show Answer Correct Answer: A) Growth and immigration rate is equal to death and emigration rate. 7. Breaks down and feeds on the remains of other organisms A) Decomposer. B) Consumer. C) Producer. D) None of the above. Show Answer Correct Answer: A) Decomposer. 8. The area between an organism's upper limit and lower limit. A) Upper Limit. B) Lower Limit. C) Range of Tolerance. D) Invasive Species. Show Answer Correct Answer: C) Range of Tolerance. 9. Grasshoppers are A) Carnivores. B) Herbivores. C) Decomposers. D) Scavengers. Show Answer Correct Answer: B) Herbivores. 10. Relationship between organism in which one organism benefits and the other is neither harmed or benefited A) Parasitism. B) Mutualism. C) Commensalism. D) Symbolism. Show Answer Correct Answer: C) Commensalism. 11. An example of a predator is A) First Level Consumer. B) Producer. C) Herbivore. D) 3rd Level Consumer. Show Answer Correct Answer: D) 3rd Level Consumer. 12. A living thing similar to a plant that is usually found growing in water. They produce their own food through photosynthesis like plants do, but algae have no leaves, stems or roots A) Rainforest. B) Algae. C) Palm Tree. D) Rock. Show Answer Correct Answer: B) Algae. 13. Biotic components refer to all organisms (living things) in an ecosystem which interact with other organisms. Abiotic components are all the non-living elements including their physical and chemical characteristics that can affect an organism in an ecosystem. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 14. What is the term for the total mass of organisms in a given area or volume? A) Biomass. B) Trophic level. C) Pyramid of biomass. D) Energy flow. Show Answer Correct Answer: A) Biomass. 15. The products of photosynthesis are the reactants of cellular respiration. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 16. What is the difference between a fundamental niche and a realized niche? A) Realized niche is the actual niche occupied considering limiting factors. B) Fundamental niche includes interactions with predators, realized does not. C) There is no significant difference. D) Fundamental niche is smaller than the realized niche. Show Answer Correct Answer: A) Realized niche is the actual niche occupied considering limiting factors. 17. Rocks, water, air, sun, and soil are ..... A) Biotic. B) Abiotic. C) All the above. D) None of the above. Show Answer Correct Answer: B) Abiotic. 18. What type of waste management is part of the Viola Woodlawn project? A) Incineration. B) Sanitary landfill and bioenergy generation. C) Recycling. D) Composting. Show Answer Correct Answer: B) Sanitary landfill and bioenergy generation. 19. Manufactures food using energy from the sun or from chemical compounds A) Autotroph. B) Heterotroph. C) Scavenger. D) Decomposer. Show Answer Correct Answer: A) Autotroph. 20. What will happen if two species occupy the same niche in an ecosystem? A) The ecosystem will be stressed and could collapse. B) One species will either alter their niche or be eliminated. C) The niche will expand to accommodate both species. D) The species will share the niche. Show Answer Correct Answer: B) One species will either alter their niche or be eliminated. 21. Which of the following Kingdoms are ONLY heterotrophic? A) Bacteria and Protista. B) Protista and Fungi. C) Fungi and Bacteria. D) Animalia and Fungi. Show Answer Correct Answer: D) Animalia and Fungi. 22. Which type of ecological succession begins on bare rock (no soil)? A) Primary. B) Secondary. C) Both. D) None of the above. Show Answer Correct Answer: A) Primary. 23. Organisms that breaks down and absorbs nutrients from dead organisms A) Consumer. B) Trophic level. C) Decomposer. D) Species. Show Answer Correct Answer: C) Decomposer. 24. In an ecosystem, you would expect to find interspecific competition between A) Males and females of a species in which both sexes occupy the same niche. B) Two wasp species that mimic each other's appearance. C) Populations of two species that occupy the same niche. D) A prey species and its predator. Show Answer Correct Answer: C) Populations of two species that occupy the same niche. 25. Which sampling technique is used for sampling plants? A) Pitfall trap. B) Sweep net. C) Tullgren funnel. D) Quadrat. Show Answer Correct Answer: D) Quadrat. ← 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