This quiz works best with JavaScript enabled. Home > Ecology Environment > Ecology And Environment – Quiz 16 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology And Environment Quiz 16 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. No longer existing A) Extinct. B) Dead. C) Gone. D) Endangered. Show Answer Correct Answer: A) Extinct. 2. Define ecosystem A) A biological community of interacting organisms and their physical environment. B) The natural home or environment of an animal, plant, or other organism. C) The regions of the surface, atmosphere, and hydrosphere of the earth occupied by living organisms. D) A group of interdependent organisms of different species growing or living together in a specified habitat. Show Answer Correct Answer: A) A biological community of interacting organisms and their physical environment. 3. The ..... of Earth's land, water, or air is called pollution. A) Condition. B) Contamination. C) Control. D) Conservation. Show Answer Correct Answer: B) Contamination. 4. Where sunlight can penetrate in a marine biome A) Photic zone. B) Aphotic zone. C) Grassland. D) Tropical rain forest. Show Answer Correct Answer: A) Photic zone. 5. Pollution sources fall into two categories: A) Biotic and abiotic. B) Point source and nonpoint source. C) Renewable and nonrenewable. D) Air and water. Show Answer Correct Answer: B) Point source and nonpoint source. 6. COSMIC RAYS SUCH AS GAMMA RAYS ARE SOURCE OF WHICH POLLUTION A) SOIL. B) NOISE. C) THERMAL. D) RADIATION. Show Answer Correct Answer: D) RADIATION. 7. What factor contributes most to the sustainability of a habitat? A) Competition among large predators. B) Large variety of organisms. C) Presence of volcanic rock. D) Absence of bacterial species. Show Answer Correct Answer: B) Large variety of organisms. 8. What is another name for an animal that eats both plants and animals? A) Herbivore. B) Omnivore. C) Carnivore. D) Producer. Show Answer Correct Answer: B) Omnivore. 9. Sea stars live in saltwater ecosystems. Some species live in shallow tidal pools, while others live in the deepest parts of the oceans. This is a description of the ..... of sea stars. A) Niche. B) Habitat. C) Population. D) Community. Show Answer Correct Answer: B) Habitat. 10. A bird that gets food by cleaning the teeth of a crocodile is an example of what? A) Mutualism. B) Commensalism. C) Parasitism. D) Communism. Show Answer Correct Answer: A) Mutualism. 11. A non-living factor in an environment is A) Biotic. B) Abiotic. C) Commensalism. D) Ecology. Show Answer Correct Answer: B) Abiotic. 12. An example of habitat destruction is A) Planting trees. B) Cleaning up oil spills. C) Clearing a tropical rainforest. D) Preventing nonpoint-source pollution. Show Answer Correct Answer: C) Clearing a tropical rainforest. 13. Why are there fewer organisms in each level as you go up the energy pyramid shown? A) There is more energy available at higher levels. B) Higher levels have more mean animals. C) There is less energy available at higher levels. D) Predators get hungrier. Show Answer Correct Answer: C) There is less energy available at higher levels. 14. What is it called when you put scraps of vegetables and fruits in a pile in your yard? A) Combustible Pile. B) Composting. C) Garbage. D) Fertilizer. Show Answer Correct Answer: B) Composting. 15. An environmental factor such as storms and extreme heat or cold that affects population regardless of their density A) Density-dependent factor. B) Population density. C) Dispersion. D) Density-independent factor. Show Answer Correct Answer: D) Density-independent factor. 16. Why do water sources need to be conserved? A) We have a limited amount of fresh water. B) Pollution reduces the amount of usable water. C) Because we need to save it for the whales. D) Both a and b. Show Answer Correct Answer: D) Both a and b. 17. What is the movement of individuals out of a population called? A) Immigration. B) Emigration. C) Migration. D) Capacity. Show Answer Correct Answer: B) Emigration. 18. Fuel created from living matter, such as trees A) Reforestation. B) Desorestation. C) Biofuel. D) Sanitation. Show Answer Correct Answer: C) Biofuel. 19. LIMITING FACTOR FOR PRODUCTIVITY IN AQUATIC SYSTEM A) LIGHT. B) WATER. C) AIR. D) ALL THE ABOVE. Show Answer Correct Answer: A) LIGHT. 20. A collection of organisms that belong to different populations but all live in the same area and interact with one another. A) Population. B) Ecosystem. C) Community. D) Ecosphere. Show Answer Correct Answer: C) Community. ← PreviousNext →Related QuizzesEcology And Environment Quiz 1Ecology And Environment Quiz 2Ecology And Environment Quiz 3Ecology And Environment Quiz 4Ecology And Environment Quiz 5Ecology And Environment Quiz 6Ecology And Environment Quiz 7Ecology And Environment Quiz 8Ecology And Environment Quiz 9Ecology And Environment Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books