This quiz works best with JavaScript enabled. Home > Science > Ecology – Quiz 258 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 258 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The variety of organisms in an ecosystem or on Earth is A) Biodiversity. B) Adaptation. C) Succession. D) Selection. Show Answer Correct Answer: A) Biodiversity. 2. Defense of a space against encroachment by other individuals. A) Habituation. B) Migration. C) Submission. D) Territoriality. Show Answer Correct Answer: D) Territoriality. 3. Plants use carbon dioxide in the process of ..... A) Decay. B) Shedding leaves. C) Photosynthesis. D) Respiration. Show Answer Correct Answer: C) Photosynthesis. 4. Phytoplankton are the primary producers of the ocean. Where would you be most likely to find plankton? A) At the bottom of the ocean. B) At the surface of the ocean. C) In the middle of the ocean. D) Along the seafloor of the ocean. Show Answer Correct Answer: B) At the surface of the ocean. 5. Nitrogen fixation is done by by nitrogen-fixing plants. A) True. B) False. Show Answer Correct Answer: B) False. 6. This ecosystem has trees (both leaf and needle), shrubs, grasses, ferns, and animals. A) Forest. B) Ocean. C) Grassland. D) Estuary. Show Answer Correct Answer: A) Forest. 7. What do all of the cycles of matter have in common? A) They have no end, they recycle energy. B) They have an end, they don't recycle energy. C) They have no end, energy is destroyed forever. D) They have nothing in common. Show Answer Correct Answer: A) They have no end, they recycle energy. 8. When an adaptation allows an organism to be better suited for its environment, it's called A) Adaptation. B) Natural selection. C) Evolution. D) Mutation. Show Answer Correct Answer: B) Natural selection. 9. An organism that obtains energy by breaking down dead organisms, faeces and excretory products and it reused by the environment is called a ..... A) Producer. B) Decoposer. C) Consumer. D) Trophic level. Show Answer Correct Answer: B) Decoposer. 10. In your home, the desk, chair, table, paper, pencil, and refrigerator A) Biotic factors. B) Abiotic factors. C) Habitat. D) Resource. Show Answer Correct Answer: B) Abiotic factors. 11. Humans A) Biotic. B) Abiotic. Show Answer Correct Answer: A) Biotic. 12. All of the following make up a habitat except ..... A) Water. B) Insect. C) Temperature. D) Sunlight. Show Answer Correct Answer: B) Insect. 13. When a fox eats a bunny the fox is the ..... A) Community. B) Prey. C) Parasite. D) Predator. Show Answer Correct Answer: D) Predator. 14. Which of the following is NOT a density-independent factor? A) Lack of food. B) Natural disasters. C) Seasonal changes. D) Human activities. Show Answer Correct Answer: A) Lack of food. 15. A living thing in an ecosystem A) Producer. B) Abiotic factor. C) Consumer. D) Biotic factor. Show Answer Correct Answer: D) Biotic factor. 16. Organisms that play a role in the nitrogen cycle A) Only plants. B) Only animals. C) Only bacteria. D) Plants, animals, and bacteria. Show Answer Correct Answer: D) Plants, animals, and bacteria. 17. The clearance or removal of a forest of group of trees. A) Overgrazing. B) Deforestation. C) Urbanization. D) Invasive species. Show Answer Correct Answer: B) Deforestation. 18. Which of the following BEST MATCHES the meaning of the word TEMPERATE. A) Temperatures within moderate limits. B) An area with trees and bushes. C) A forest with plants growing together. D) An area with all the same temperature. Show Answer Correct Answer: A) Temperatures within moderate limits. 19. Can organisms absorb nitrogen gas directly out of the atmosphere? A) Yes. B) No. Show Answer Correct Answer: B) No. 20. All of the living things in an area are called A) Abiotic factors. B) Biotic factors. C) Animals. D) Species. Show Answer Correct Answer: B) Biotic factors. ← 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