This quiz works best with JavaScript enabled. Home > Science > Earth > Ecology – Quiz 86 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 86 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What type of symbiosis? *Remora use suckers to attach temporarily to large marine animals such as sharks, manta rays, whales, turtles, or large fish. *The shark provides free transportation, protection, and dropped food and feces which the remora feeds on. The host is not injured. A) Commensalism. B) Mutualism. C) Parasitism. D) Predation. Show Answer Correct Answer: A) Commensalism. 2. A resource that can replenish itself is ..... A) Renewable. B) Non-renewable. Show Answer Correct Answer: A) Renewable. 3. Decomposers are necessary in a food chain because they A) Return nutrients to the ecosystem. B) Absorb energy from the sun. C) Produce organic nutrients. D) Manufacture food by photosynthesis. Show Answer Correct Answer: A) Return nutrients to the ecosystem. 4. Why do the populations of invasive species grow so quickly? A) Invasive species are native to an area. B) Invasive species are prey to many animals. C) Invasive species have no predators. D) Invasive species keep the ecosystem in equilibrium. Show Answer Correct Answer: C) Invasive species have no predators. 5. Which is not the characteristics of 'r' selected species? A) Reproduce quickly. B) Parental care. C) A low survival rate of progenies. D) Produce a large number of progenies. Show Answer Correct Answer: B) Parental care. 6. What color of the basket is the paper inserted into? A) Green. B) Yellow. C) White. D) Blue. Show Answer Correct Answer: D) Blue. 7. 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. 8. Dirty water that pollutes river A) Pollution. B) Sewage. C) Oxygen. D) Environment. Show Answer Correct Answer: B) Sewage. 9. Plants and animals cannot use nitrogen directly from the air. A) True. B) False. Show Answer Correct Answer: A) True. 10. 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. 11. 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. 12. 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. 13. 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. 14. 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. 15. 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. 16. Nonliving parts of environment A) Abiotic factors. B) Biotic factors. C) Habitat. D) Population. Show Answer Correct Answer: A) Abiotic factors. 17. 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. 18. 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. 19. 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. 20. 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. ← PreviousNext →Related QuizzesScience QuizzesEcology Quiz 1Ecology Quiz 2Ecology Quiz 3Ecology Quiz 4Ecology Quiz 5Ecology Quiz 6Ecology Quiz 7Ecology Quiz 8Ecology Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books