This quiz works best with JavaScript enabled. Home > Science > Earth > Ecology – Quiz 248 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 248 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Density Dependent Factor:definition A) Population changing factors that are triggered by an increase in species size. B) Population changing factors that are triggered by no change in a population density. C) Population changing factors that are triggered by an increase in a population density. D) Population changing factors that are triggered by an increase in species camouflage ability. Show Answer Correct Answer: C) Population changing factors that are triggered by an increase in a population density. 2. Organisms that use energy from the sun to make their own food. A) Producers. B) Herbivores. C) Omnivores. D) Decomposers. Show Answer Correct Answer: A) Producers. 3. The deer, grasshopper, and bird are all examples of which type of consumers in a food pyramid? A) Producers. B) Primary consumers. C) Secondary consumers. D) Tertiary consumers. Show Answer Correct Answer: B) Primary consumers. 4. If the atmosphere is 78% N2, why can't we just get our nitrogen by breathing? A) We have no mechanism to break the triple bond of nitrogen between the atoms. B) Our lungs would be damaged by the N2. C) We need Oxygen for cellular respiration. D) The legumes take it up first. Show Answer Correct Answer: A) We have no mechanism to break the triple bond of nitrogen between the atoms. 5. Most eukaryotes are surrounded by a ..... A) Cell wall. B) Cell membrane. C) Cell envelope. D) Loving, supportive family. Show Answer Correct Answer: B) Cell membrane. 6. A single living thing A) Organism. B) Population. C) Community. D) None of above. Show Answer Correct Answer: A) Organism. 7. This biome has the highest biodiversity on land is humid and tropical and has poor soil quality A) Desert. B) Tundra. C) Taiga. D) Tropical rainforest. Show Answer Correct Answer: D) Tropical rainforest. 8. Which is the correct order of tropic levels? A) Primary Consumer, Producer, Secondary Consumer, Tertiary Consumer. B) Tertiary Consumer, Primary Consumer, Secondary Consumer, Producer. C) Producer, Primary Consumer, Secondary Consumer, Tertiary Consumer. D) Quaternary Consumer, Tertiary Consumer, Secondary Consumer, Producer. Show Answer Correct Answer: C) Producer, Primary Consumer, Secondary Consumer, Tertiary Consumer. 9. Predict what might happen to a population that is experiencing little immigration and emigration, low birth rate, and high death rate. A) The population decreases. B) The population increases. C) The population grows too much too fast. D) The population grows outside of its habitat. Show Answer Correct Answer: A) The population decreases. 10. This biome has no seasons. It is humid and the temperature is about 80 degrees all year. It rains everyday. A) Grassland. B) Desert. C) Tundra. D) Rainforest. Show Answer Correct Answer: D) Rainforest. 11. This ecosystem has the maximum biomass A) Grassland ecosystem. B) Pond ecosystem. C) Lake ecosystem. D) Forest ecosystem. Show Answer Correct Answer: D) Forest ecosystem. 12. Which of these is an example of an autotroph? A) Sunflower. B) Leopard. C) Krill. D) Hummingbird. Show Answer Correct Answer: A) Sunflower. 13. What is a living thing that makes its own food? A) Carnivore. B) Producer. C) Consumer. D) Herbivore. Show Answer Correct Answer: B) Producer. 14. If all the members of a species disappears from Earth, the species is said to be? A) Threatened. B) Endangered. C) Extinct. D) Keystone species. Show Answer Correct Answer: C) Extinct. 15. 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. 16. 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. 17. 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. 18. 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. 19. 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. 20. 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). ← 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