This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 14 Ecosystem – Quiz 41 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 14 Ecosystem Quiz 41 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which family does the Waratah belong to? A) Eucalyptus. B) Murtacea. C) Proteacea. D) Acacia. Show Answer Correct Answer: C) Proteacea. 2. What do you call an organism that must consume other organisms for food? A) Autotroph. B) Heterotroph. C) Producer. D) Phytoplankton. Show Answer Correct Answer: B) Heterotroph. 3. Which of the following is a threat to ecosystem services? A) Habitat destruction. B) Sustainable development. C) Biodiversity conservation. D) Climate change. Show Answer Correct Answer: A) Habitat destruction. 4. What do you call a group of organisms of the same species, who live in the same area at the same time? A) Population. B) Community. C) Ecosystem. D) Species. Show Answer Correct Answer: A) Population. 5. Which of these organisms would most likely be found at the top of an energy pyramid? A) Clams-a primary consumer. B) Sardines-a primary consumer. C) Sharks-a secondary consumer. D) Kelp-a primary producer. Show Answer Correct Answer: C) Sharks-a secondary consumer. 6. Which of the following is NOT an example of a decomposer A) A mushroom. B) Bacteria. C) A crow. D) None of the above. Show Answer Correct Answer: C) A crow. 7. The jelly-like substance that fills the cell. A) Nucleus. B) Cell wall. C) Cytoplasm. D) Chloroplasts. Show Answer Correct Answer: C) Cytoplasm. 8. What term describes all nonliving factors in an environment? A) Abiotic. B) Zoological. C) Biotic. D) Biological. Show Answer Correct Answer: A) Abiotic. 9. How do predators affect prey populations? A) Predators help control prey populations, preventing overpopulation and resource depletion. B) Predators increase the number of prey by providing food sources. C) Predators have no significant impact on prey populations. D) Predators only affect the size of the prey's habitat. Show Answer Correct Answer: A) Predators help control prey populations, preventing overpopulation and resource depletion. 10. As ecosystems move through the stages of succession, the populations of organisms in them change. Which of the following describes the stage of succession likely to have the most species diversity? A) A newly formed volcanic island. B) An agricultural field that has not been plowed for one year. C) A temperate forest that has never been cleared by logging. D) A field that is regularly mowed. Show Answer Correct Answer: C) A temperate forest that has never been cleared by logging. 11. Select the plant or animal that can be found in the desert ecosystem. A) Cat. B) Toucan. C) Cacti. D) Bear. Show Answer Correct Answer: C) Cacti. 12. A scientist was studying a population of fish in a pond over a period of 10 years. They observed thatthe population increased each year for 3 years, and then remained nearly constant for the rest ofthe study. The best explanation for this observation is that the population had A) Stopped reproducing. B) Reached carrying capacity. C) Mutated into a different species. D) Run out of food and all died. Show Answer Correct Answer: B) Reached carrying capacity. 13. The arrow in a food chain shows ..... A) The link from predator to prey. B) What eats what. C) The energy transferred. D) The number of steps in the chain. Show Answer Correct Answer: C) The energy transferred. 14. Berikut ini yang tergolong organisme autotrof adalah ..... A) Lumut. B) Serangga. C) Tali putri. D) Jamur saprofit. Show Answer Correct Answer: A) Lumut. 15. Berikut ini yang bukan merupakan komponen abiotik adalah ..... A) Air. B) Tanah. C) Udara. D) Tumbuhan. Show Answer Correct Answer: D) Tumbuhan. 16. Carnivores A) Animals that feeds on flesh and plants. B) An animal that doesn't like meat. C) An animal that feeds on flesh. D) A human. Show Answer Correct Answer: C) An animal that feeds on flesh. 17. The process by which the body breaks down food so that it can be used in the process of cellular respiration ..... A) Composition. B) Digestion. C) Deposition. D) Absorption. Show Answer Correct Answer: B) Digestion. 18. What would happen is rabbits from a warm, southern climate were moved to a cold, northern climate? A) ALL of the rabbits will try to adapt to the change. B) MOST of the rabbits will try to adapt to the change. C) FEW OR NONE will adapt to the change. D) None of the above. Show Answer Correct Answer: C) FEW OR NONE will adapt to the change. 19. An organism that eats primary consumers. A) Primary Consumer. B) Secondary Consumer. C) Energy Pyramid. D) Biological Magnification. Show Answer Correct Answer: B) Secondary Consumer. 20. The variety of environmental conditions which an organism survives and reproduces is called A) Adaptation. B) Microbiome. C) Tolerance. D) Optimum range. Show Answer Correct Answer: C) Tolerance. 21. What recent changes in climate have affected Australia? A) An increase in rainforest areas. B) A general cooling of the continent. C) A decrease in desert areas. D) A drying out and general warming. Show Answer Correct Answer: D) A drying out and general warming. 22. What is the 'great drying'? A) An increase in ocean levels around Australia. B) A significant effect on Australia's biota due to drying. C) A cooling phase in Australia's climate. D) A period of significant rainfall. Show Answer Correct Answer: B) A significant effect on Australia's biota due to drying. 23. Which of the following would NOT be an effect of factory runoff in a local stream? A) Increase in Biodiversity. B) Extirpation of Sensitive Species. C) Change in Water pH. D) Increase in Algal Growth. Show Answer Correct Answer: A) Increase in Biodiversity. 24. Autotrophs use ..... to produce ..... A) O$_{2}$$_{}$, glucose. B) CO$_{2}$, glucose. C) O$_{2}$, deoxyribose. D) CO$_{2}$, deoxyribose. Show Answer Correct Answer: B) CO$_{2}$, glucose. 25. In the ..... zone, the sea floor drops sharply. A) Intertidal. B) Neritic. C) Oceanic. D) Benthic. Show Answer Correct Answer: C) Oceanic. ← 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