This quiz works best with JavaScript enabled. Home > Science > Earth > Ecology – Quiz 107 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 107 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The total mass of living tissue within a trophic level A) Biomass. B) Trophic levels. C) Ecological pyramid. D) Biomagnification. Show Answer Correct Answer: A) Biomass. 2. An organism that gets energy from eating other organisms is a ..... A) Producer. B) Consumer. C) Decoposer. D) Prey. Show Answer Correct Answer: B) Consumer. 3. Which trophic level includes humans? A) 2nd, 3rd, and 4th trophic levels. B) Humans are secondary consumers. Show Answer Correct Answer: A) 2nd, 3rd, and 4th trophic levels. 4. All living organisms are mainly composed of what elements? A) Oxygen, Carbon, Hydrogen, Nitrogen. B) Carbon, Phosphorus, Nitrogen, Oxygen. C) Sodium, Carbon, Nitrogen, Hydrogen. D) Calcium, Phosphorus, Nitrogen, Oxygen. Show Answer Correct Answer: A) Oxygen, Carbon, Hydrogen, Nitrogen. 5. Which would describe a limiting factor? A) Something that is alive in an ecosystem. B) Something that isn't alive in an ecosystem. C) Something that helps survival rates in an ecosystem. D) Something the inhibits life and makes it harder for survival. Show Answer Correct Answer: D) Something the inhibits life and makes it harder for survival. 6. The first trophic level in a food chain is the A) Primary consumer. B) Secondary consumer. C) Producer. D) Tertiary consumer. Show Answer Correct Answer: C) Producer. 7. A bird stalks, kills, and then eats an insect. Based on its behavior, which ecological terms describe the bird? A) Herbivore, Decomposer. B) Producer, Heterotroph. C) Carnivore, Consumer. D) Autotroph, Herbivore. Show Answer Correct Answer: C) Carnivore, Consumer. 8. A primary consumer eats ..... A) Producers. B) Insects. C) Small rodents. D) Large mammals. Show Answer Correct Answer: A) Producers. 9. A mistletoe plant attaches itself to a spruce tree causing harm by absorbs the tree's water and nutrients. What type of relationship does this describe? A) Mutualism. B) Commensalism. C) Parasitism. D) None of above. Show Answer Correct Answer: C) Parasitism. 10. Steve wanted to see if the type of fertilizer made sunflowers grow larger. What is the dependent variable A) Type of fertilizer. B) Size of sunflower. C) Type of sunflower. D) None of above. Show Answer Correct Answer: B) Size of sunflower. 11. Organisms that must live on or inside another organism to get energy. A) Predator. B) Parasite. C) Prey. D) None of above. Show Answer Correct Answer: B) Parasite. 12. What is another word for producer? A) Heterotroph. B) Autotroph. Show Answer Correct Answer: B) Autotroph. 13. Which are located at the very BOTTOM of an energy pyramid? A) Producers. B) Consumers-Level 1. C) Consumers-Level 2. D) Decomposers. Show Answer Correct Answer: A) Producers. 14. Which of these describes an abiotic factor in the Tundra biome? A) Temperatures ranging from 50-95 degrees Fahrenheit. B) Strong cold winds. C) Snowy Owls. D) Lichen and other low growing plants. Show Answer Correct Answer: B) Strong cold winds. 15. A student wants to investigate competition between two populations of organisms. The investigation will need to include two species that- A) Have the same basic needs. B) Reproduce at a slow rate. C) Do not depend on water. D) Live in different biomes. Show Answer Correct Answer: A) Have the same basic needs. 16. Which of the following does NOT explain how deforestation might increase the risk of flooding? A) The water cycle is disrupted. B) Tree roots bind soil particles together. C) Tree canopy prevents rain beating down on soil. D) Soil nutrients are lost through leaching and run-off water. Show Answer Correct Answer: D) Soil nutrients are lost through leaching and run-off water. 17. All the populations of different species in a particular area A) Ecosystem. B) Community. C) Population. D) Environment. Show Answer Correct Answer: B) Community. 18. In parasitism A) Both species benefit. B) One species is harmed. C) Species fight for something. D) One species is unaffected. Show Answer Correct Answer: B) One species is harmed. 19. If the birthrate is greater than the deathrate, what will happen to the size of the population? (birthrate > deathrate) A) It will increase. B) It will decrease. C) It will stay the same. D) It will take over the world. Show Answer Correct Answer: A) It will increase. 20. Endangered animal species are listed in: A) Blue list. B) Black list. C) Red square. D) Red list. Show Answer Correct Answer: D) Red list. ← 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