This quiz works best with JavaScript enabled. Home > Science > Earth > Ecology – Quiz 110 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 110 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The organism that a parasite infects A) Predator. B) Prey. C) Host. D) None of above. Show Answer Correct Answer: C) Host. 2. These type of consumers are important for the cycle matter because they feed by chemically breaking down organic matter, which helps molecules return to the soil and contribute to the cycle A) Scavengers. B) Decomposers. C) Omnivores. D) Tetrabores. Show Answer Correct Answer: B) Decomposers. 3. One characteristic feature of the tundra is that only the surface thaws in the summer and refreezes in the winter, leaving a permanently frozen subsoil. This characteristic is known as A) Hoarfrost. B) Glaciation. C) Permafrost. D) Crystallization. Show Answer Correct Answer: C) Permafrost. 4. All of the nonliving things in an ecosystem are called A) Biotic factors. B) Dead things. C) Abiotic factors. D) Decomposers. Show Answer Correct Answer: C) Abiotic factors. 5. Which of the following is the best example of a density-independent limiting factor? A) Increase in CWD in the white-tailed deer population. B) Decrease in milkweed supply for monarch butterflies. C) Increase in coyotes in an area where rabbits live. D) Decrease in prairie habitat due to construction of a soccer field. E) Increase in mosquito population for bats. Show Answer Correct Answer: D) Decrease in prairie habitat due to construction of a soccer field. 6. How is the majority of energy within an ecosystem lost? A) Heat loss. B) Energy used to grow biomass. C) Cellular respiration. D) Cellular metabolism. Show Answer Correct Answer: A) Heat loss. 7. Plankton that are more animal in nature are called what? A) Krill. B) Zooplankton. C) Phytoplankton. D) Plankton. Show Answer Correct Answer: B) Zooplankton. 8. Which of the following is not an interaction organisms have with each other? A) Resource partitioning. B) Mutualism. C) Predation. D) Commensalism. Show Answer Correct Answer: A) Resource partitioning. 9. Which of the following is NOT considered to be a symbiotic relationship? A) A mother bear caring for her cub. B) Worms living in a cow's intestine. C) A bacterial infection. D) A viral attack on your immune system. Show Answer Correct Answer: A) A mother bear caring for her cub. 10. Organisms that make their own food: A) Decoposer. B) Producer/autotroph. C) Consumer/heterotroph. D) Scavenger. Show Answer Correct Answer: B) Producer/autotroph. 11. Food webs are models that show: A) Biotic and abiotic factors in an ecosystem. B) Complex networks of feeding relationships and energy flow in an ecosystem. C) Only predators in an ecosystem. D) All the habitats in an ecosystem. Show Answer Correct Answer: B) Complex networks of feeding relationships and energy flow in an ecosystem. 12. What do the arrows in a food chain represent? A) What eats the organism. B) The flow of energy. C) You better not pick what eats what. D) I said don't pick it!. Show Answer Correct Answer: B) The flow of energy. 13. The job of decomposers in an ecosystem is to A) Break down once living things from all levels of the ecosystem to recycle nutrients back to producers. B) Break down only top level consumers to recycle nutrients. C) Break down only producers to recycle nutrients. D) Give energy to all levels of the ecosystem. Show Answer Correct Answer: A) Break down once living things from all levels of the ecosystem to recycle nutrients back to producers. 14. The arrows in a food chain or web represent ..... A) They point to the organism that is being eaten. B) It shows how sunlight flows within an ecosystem. C) They show the direction the energy is flowing between organisms. D) They represent how water is transferred within a habitat. Show Answer Correct Answer: C) They show the direction the energy is flowing between organisms. 15. Organisms that feed on plants and animals A) Herbivores. B) Carnivores. C) More destructive. D) Omnivores. Show Answer Correct Answer: D) Omnivores. 16. Which biome is hot and dry in summer but cool and moist in winter with a moderate amount of precipitation? A) Grassland. B) Shrubland. C) Coniferous rainforest. D) Temperate deciduous rainforest. Show Answer Correct Answer: B) Shrubland. 17. How can abiotic factors change in an ecosystem? A) Flooding. B) Forest fires. C) Drought. D) All of the above. Show Answer Correct Answer: D) All of the above. 18. The source of all energy in for an ecosystem A) Sun. B) Trees. C) Oxygen. D) Magic. Show Answer Correct Answer: A) Sun. 19. In the carbon cycle, what is one way carbon is released into the atmosphere? A) Photosynthesis. B) Burning of fossil fuels. C) Nitrogen-fixing bacteria in the soil. D) Evaporation. Show Answer Correct Answer: B) Burning of fossil fuels. 20. Which event is the best example of competition between species in a pond? A) Dragonflies landing on lily pads. B) Lizards and snakes lying in the sun. C) Hawks eating mice. D) Frogs and toads eating flies. Show Answer Correct Answer: D) Frogs and toads eating flies. ← 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