This quiz works best with JavaScript enabled. Home > Science > Ecology – Quiz 253 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 253 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The place in which a plant, animal, bird or fish normally lives is its ..... A) Food chain. B) Habitat. C) Eco-community. D) Eco-friendly. Show Answer Correct Answer: B) Habitat. 2. Why are fossil fuels considered nonrenewable? A) They form quickly. B) They only formed once. C) They took millions of years to form. D) They are used as soon as they form. Show Answer Correct Answer: C) They took millions of years to form. 3. What is a relationship between two or more organisms in which at lease one organism will benefit? A) Limiting Factor. B) Adaptation. C) Mimicry. D) Symbiosis. Show Answer Correct Answer: D) Symbiosis. 4. Nitrogen fixation is when bacteria ..... A) Convert unusable nitrogen into usable forms. B) Convert water from a liquid to a gas. C) Convert nitrogen bases into amino acids. D) Convert nitrogen from photosynthesis into nitrogen for cellular respiration. Show Answer Correct Answer: A) Convert unusable nitrogen into usable forms. 5. The number of organisms that can survive in a balanced ecosystem A) Carrying capacity. B) Limited factor. C) Maximum security. D) None of above. Show Answer Correct Answer: A) Carrying capacity. 6. What types of organisms are in the first trophic level? Give an example. A) Producers (plants). B) Consumers (humans). Show Answer Correct Answer: A) Producers (plants). 7. Worms are considered ..... A) Producer. B) Consumer. C) Decoposer. D) None of above. Show Answer Correct Answer: C) Decoposer. 8. Ostriches and gazelles are two animals that live in Africa. They graze for food near each other because they help each other spot predators. The gazelle has excellent eyesight, but poor hearing, and the ostrich has excellent hearing, but poor eyesight. These two animals will alert one another when danger is near. Which term best describes this relationship? A) Predation. B) Commensalism. C) Mutualism. D) Parasitism. Show Answer Correct Answer: C) Mutualism. 9. What is true about the pyramid of numbers? A) There are more producers than first-level consumers. B) First-level consumers make up the greatest number of individuals. C) There are more third-level consumers than second-level consumers. D) There are more second-level consumers than first-level consumers. Show Answer Correct Answer: B) First-level consumers make up the greatest number of individuals. 10. Some bacteria in the soil can change nitrogen compounds back into A) Proteins. B) Nitrogen gas. C) Sugar. D) Oxygen. Show Answer Correct Answer: B) Nitrogen gas. 11. Which best describes eutriphication? A) Pond slowly filling with sediment over time; becoming a forest. B) Growth of an ecosystem following a disturbance. C) Forest burning down. D) Humans causing succession. Show Answer Correct Answer: A) Pond slowly filling with sediment over time; becoming a forest. 12. Which animal is a predator in the rainforest? A) Giraffe. B) Zebra. C) Camel. D) Jaguar. Show Answer Correct Answer: D) Jaguar. 13. What is an advantage of using biomass-based fuels? A) It increases the amount of fossil fuels needed. B) It decreases the amount of nonrenewable resources needed. C) It increases the amount of nonrenewable resources needed. D) It will increase biodiversity. Show Answer Correct Answer: B) It decreases the amount of nonrenewable resources needed. 14. Which biome is the most diverse? A) Tropical rainforest. B) Tundra. C) Grassland. D) Deciduous rainforest. Show Answer Correct Answer: A) Tropical rainforest. 15. A diagram of the living things in an ecosystem that shows all of the paths energy can take as it travels from producers to consumers is a A) Food chain. B) Food web. Show Answer Correct Answer: B) Food web. 16. Consist of living things in an ecosystem A) Physical environment. B) Living environment. C) Food chain. D) Consumer. Show Answer Correct Answer: B) Living environment. 17. Which biome is characterized by little rain, hot days, and cool nights A) Hot desert. B) Tropical rainforest. C) Savannah. D) Tundra. Show Answer Correct Answer: A) Hot desert. 18. What is an organism that breaks down waste and dead organisms? A) Producer. B) Consumer. C) Decoposer. D) Autotroph. Show Answer Correct Answer: C) Decoposer. 19. Which relationship is referring to the contest among organisms to get all they need to survive? A) Symbiosis. B) Predation. C) Competition. D) Parasitism. Show Answer Correct Answer: C) Competition. 20. Box turtles get their energy from insects, berries, and fruit. Box turtles are ..... A) Producers. B) Herbivores. C) Omnivores. D) Carnivores. Show Answer Correct Answer: C) Omnivores. ← 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