This quiz works best with JavaScript enabled. Home > Science > Earth > Ecology – Quiz 259 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 259 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following is a key characteristic of most invasive species? A) Ability to breathe in the air & in the water. B) Large, sharp teeth. C) Produce many offspring. D) Is a top predator. Show Answer Correct Answer: C) Produce many offspring. 2. Carbon cycles between the biotic & abiotic worlds through the processes of ..... A) Cellular respiration & transpiration. B) Transpiration & photosynthesis. C) Cellular respiration & photosynthesis. D) Evaporation & photosynthesis. Show Answer Correct Answer: C) Cellular respiration & photosynthesis. 3. A place in the environment where a living organisms lives and grows naturally is known as A) Biotic. B) Abiotic. C) Habitat. D) Interaction. Show Answer Correct Answer: C) Habitat. 4. Which one is an abiotic factor? A) Water. B) Tree. C) Worm. D) Wolf. Show Answer Correct Answer: A) Water. 5. An example of a biotic factor in an ecosystem would be A) The amount of rain it gets per year. B) The average temperature in the ecosystem. C) The rocks found there. D) The monkeys that live there. Show Answer Correct Answer: D) The monkeys that live there. 6. A keystone species is A) A single species that is not usually abundant in a community yet exerts strong control on the structure of a community. B) A symbiotic relationship in which one organism benefits and the other does not. C) Full range of physical and biological conditions in which an organism lives. D) Ability of an organism to survive. Show Answer Correct Answer: A) A single species that is not usually abundant in a community yet exerts strong control on the structure of a community. 7. Which of the following is the 1st order consumer? A) Beasts. B) Malnutrition. C) Herbivores. D) Executives. E) Parasites. Show Answer Correct Answer: C) Herbivores. 8. Why is the bottom of an energy pyramid larger than the top? A) Smallest amount of biomass so it can support the energy requirements of the organisms at lowest levels. B) The base must have the largest amount of biomass (shown as the widest bar) so it can support the energy requirements of the organisms at higher levels. Show Answer Correct Answer: B) The base must have the largest amount of biomass (shown as the widest bar) so it can support the energy requirements of the organisms at higher levels. 9. Pollution caused by pesticides and fertilizers is limited to areas close to the source (farms). A) True. B) False. Show Answer Correct Answer: B) False. 10. The living parts of an organisms environment are called its ..... A) Community. B) Habitat. C) Biotic factors. D) Abiotic factors. Show Answer Correct Answer: C) Biotic factors. 11. Which of these conditions to keep animals in would increase the energy at the end of the food chain the most? A) Keeping the animals cold and moving a lot. B) Keeping the animals warm and moving a lot. C) Keeping the animals cold and still. D) Keeping the animals warm and still. Show Answer Correct Answer: D) Keeping the animals warm and still. 12. ..... are the first organisms to colonize an area and begin the process of ecological succession. A) Foundational organisms. B) Introductory organisms. C) Primary organisms. D) Pioneer species. Show Answer Correct Answer: D) Pioneer species. 13. The variety of organisms considered at all levels from populations to ecosystems A) Biodiversity. B) Taxonomy. C) Binomial Nomenclature. D) Subspecies. Show Answer Correct Answer: A) Biodiversity. 14. The match of a species to a specific environmental condition: A) Niche. B) Habitat. C) Individual. D) Partner. Show Answer Correct Answer: A) Niche. 15. What are sources of water pollution? A) Precipitation as Acid rain. B) Runoff water & Groundwater. C) Industry & Household waste. D) All of these. Show Answer Correct Answer: D) All of these. 16. A herbivore is a ..... A) Consumer that eats both plants and other animals. B) Consumer that only eats other animals. C) Consumer that only eats plants. D) None of above. Show Answer Correct Answer: C) Consumer that only eats plants. 17. In which biome would I be most likely to find buffalo? A) Desert. B) Temperate deciduous forest. C) Taiga. D) Grasslands. Show Answer Correct Answer: D) Grasslands. 18. What group of organisms are the most plentiful in an ecosystem? (which group has the biggest population) A) Consumers. B) Producers. C) Decomposers. D) Apex Predators. Show Answer Correct Answer: B) Producers. 19. Scientists discover a new species of tree that is adapted well for a cold environment with a moderate amount of rainfall. In which biome would this new species most likely be found? A) Deciduous forest. B) Tropical forest. C) Tundra. D) Taiga. Show Answer Correct Answer: D) Taiga. 20. An inability to adapt to environmental changes can lead to death of all members of a species. This is called ..... A) Expatriation. B) Examination. C) Extermination. D) Extinction. Show Answer Correct Answer: D) Extinction. ← 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