This quiz works best with JavaScript enabled. Home > Science > Ecology – Quiz 88 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 88 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What color of the basket is the paper inserted into? A) Green. B) Yellow. C) White. D) Blue. Show Answer Correct Answer: D) Blue. 2. As resources in a population become less available, an environment reaches its A) Limiting factor. B) Trophic level. C) Carrying capacity. D) Exponential growth. Show Answer Correct Answer: C) Carrying capacity. 3. Dirty water that pollutes river A) Pollution. B) Sewage. C) Oxygen. D) Environment. Show Answer Correct Answer: B) Sewage. 4. Plants and animals cannot use nitrogen directly from the air. A) True. B) False. Show Answer Correct Answer: A) True. 5. Organisms that obtain nutrients by breaking down wastes and dead organisms are A) Omnivores. B) Decomposers. C) Herbivores. D) Producers. Show Answer Correct Answer: B) Decomposers. 6. Lions eat giraffes in savannas. What would happen to the flow of energy if giraffes were affected by disease? A) Remaining giraffes would fight each other for food. B) Less food and energy will be available to lions. C) Lions will begin eating other mammals. D) Trees and shrubs which a giraffe eats would decrease. Show Answer Correct Answer: B) Less food and energy will be available to lions. 7. One organism benefits, the other is neither helped or harmed; clown fish and sea anemones. A) Symbiosis. B) Habitat. C) Biome. D) Commensalism. Show Answer Correct Answer: D) Commensalism. 8. A bee and a flower are in a symbiotic relationship. The bee gets the nutrition it needs from the flower, and the flower is able to spread pollen thanks to the bee. What type of relationship? A) Mutualism. B) Commensalism. C) Parasitism. D) None of above. Show Answer Correct Answer: A) Mutualism. 9. Why are producers found at the base of the pyramid? A) They create all of the energy and therefore have the most energy of all of the trophic levels. B) There are more plants than animals. C) They begin the flow of energy in an ecosystem. D) All of these answers are correct. Show Answer Correct Answer: D) All of these answers are correct. 10. Which statement best describes the role of decomposers? A) They convert carbon dioxide and water to glucose. B) They break down organic compound into products used by other organisms. C) They release oxygen to the atmosphere. D) They provide energy for the synthesis of proteins. Show Answer Correct Answer: B) They break down organic compound into products used by other organisms. 11. Nonliving parts of environment A) Abiotic factors. B) Biotic factors. C) Habitat. D) Population. Show Answer Correct Answer: A) Abiotic factors. 12. Needed for basic life A) A role an organism plays in an environment. B) Air, water, nutrients, sun, temperature. C) It can harm or destroy an ecosystem or distort the natural balance. D) Can be huge or tiny. Show Answer Correct Answer: B) Air, water, nutrients, sun, temperature. 13. Green Mix + ..... = Compost. Choose the answer that should be in the blank area. A) Blue Mix. B) Brown Mix. C) Yellow Mix. D) Red Mix. Show Answer Correct Answer: B) Brown Mix. 14. A region of Earth with a specific climate and organisms adapted to the particular environment A) Community. B) Producer. C) Detritivore. D) Biome. Show Answer Correct Answer: D) Biome. 15. Most fish have ..... to protect their bodies. A) Hair. B) Scales. C) Feathers. D) Skin. Show Answer Correct Answer: B) Scales. 16. The maintenance of a self-sustaining ecosystem requires a A) Constant temperature. B) Greater number of herbivores than producers. C) Cycling of materials between organisms and their environment. D) Soil that is acidic. Show Answer Correct Answer: C) Cycling of materials between organisms and their environment. 17. How can people change biomes? A) By melting the permafrost with campfires. B) By cutting down trees & polluting the water. C) By raising different kinds of animals on farms. D) By using canoes & boats to navigate rivers. Show Answer Correct Answer: B) By cutting down trees & polluting the water. 18. A decomposer? A) Eats dead plants or animals and breaks down to put nutrients in the soil. B) Eats plants or other animals for food. C) Makes its own food. D) Machine that gathers trash. Show Answer Correct Answer: A) Eats dead plants or animals and breaks down to put nutrients in the soil. 19. An underground reservoir of water is known as ..... A) An Estuary. B) An Aquifer. C) Sublimation. D) Permafrost. Show Answer Correct Answer: B) An Aquifer. 20. Through which process do living organisms release carbon into the atmosphere? A) Photosynthesis. B) Cellular Respiration. C) Transpiration. D) Combustion. Show Answer Correct Answer: B) Cellular Respiration. ← PreviousNext →Related QuizzesEcology Quiz 1Ecology Quiz 2Ecology Quiz 3Ecology Quiz 4Ecology Quiz 5Ecology Quiz 6Ecology Quiz 7Ecology Quiz 8Ecology Quiz 9Ecology Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books