This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Earth > Ecology – Quiz 45 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 45 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Living things in an ecosystem are called ..... A) Abiotic. B) Omnivore. C) Biotic. D) Herbivore. Show Answer Correct Answer: C) Biotic. 2. A(n) ..... shaped curve describes the tendency of a population to grow without limit to its size. A) L. B) T. C) J. D) S. Show Answer Correct Answer: C) J. 3. What is the formula for atmospheric nitrogen? A) Na. B) N. C) Nah. D) Type. Show Answer Correct Answer: A) Na. 4. If a hawk eats a snake, the snake is the ..... A) Prey. B) Mutualistic partner. C) Alpha. D) Predator. Show Answer Correct Answer: A) Prey. 5. Green House gases A) Absorb the sun's radiation and trap heat. B) Are good for our health. C) Absorb gravity and keep us attached to Earth. D) Expulse radiation to the sun and prevent us from getting to warm. Show Answer Correct Answer: A) Absorb the sun's radiation and trap heat. 6. Which type of consumer eats only dead or decaying matter? A) Herbivores. B) Omnivores. C) Carnivores. D) More destructive. Show Answer Correct Answer: D) More destructive. 7. What is the difference between a Food WEB and a Food CHAIN? A) Food Chain-is linear, each organism is in a different trophic level, simple. Food Web-is complex, interconnected chains in an ecosystem. B) Food Chain-is complex, interconnected chains in an ecosystem. Food Web-is linear, each organism is in a different trophic level, simple. Show Answer Correct Answer: A) Food Chain-is linear, each organism is in a different trophic level, simple. Food Web-is complex, interconnected chains in an ecosystem. 8. How does oxygen cycle between plants and animals? A) Plants and animals both release oxygen. B) Plants and animals convert water into oxygen. C) Plants take in oxygen that is produced by animals. D) Animals take in oxygen that is produced by plants. Show Answer Correct Answer: D) Animals take in oxygen that is produced by plants. 9. An organism's ..... is the environment in where it lives A) Ecosystem. B) Habitat. C) Community. D) Niche. Show Answer Correct Answer: B) Habitat. 10. Humans determine which traits are desirable in the species. They then increase the alleles for these traits through breeding. A) Selective Breeding. B) Natural Selection. Show Answer Correct Answer: A) Selective Breeding. 11. Decomposers are represented by A) Plants. B) Fungi and bacteria. C) Animals. D) Protectist. Show Answer Correct Answer: B) Fungi and bacteria. 12. This type of consumer eats both plants and meat. A) Omnivore. B) Carnivore. C) Herbivore. D) Producer. Show Answer Correct Answer: A) Omnivore. 13. Giraffes have long necks that help them reach leaves high up in trees. They get all the energy they need from plants such as this. What type of consumer are giraffes. A) Herbivore. B) Omnivore. C) Carnivore. D) Decoposer. Show Answer Correct Answer: A) Herbivore. 14. The living and nonliving things present in an ecosystem that prevent a population from growing beyond a certain size, including food, water, available mates, and predators A) Biotic factor. B) Ecology. C) Limiting factor. D) Abiotic factor. Show Answer Correct Answer: C) Limiting factor. 15. Organisms that hunt other organisms for food are called ..... A) Heterotrophs. B) Producers. C) Prey. D) Predators. Show Answer Correct Answer: D) Predators. 16. A tapeworm steals the nutrients from a dog making it weak and sick ..... this shows which type of symbiotic relationship? A) Commensalism. B) Parasitism. C) Mutualism. D) None of above. Show Answer Correct Answer: B) Parasitism. 17. After a volcanic eruption, lava covers the land. What is the order that plants grow to repopulate the area? A) Lichens $\rightarrow$ Shrubs $\rightarrow$ Grasses $\rightarrow$ Trees. B) Lichens $\rightarrow$ tree $\rightarrow$ shrubs$\rightarrow$Grasses. C) Grasses $\rightarrow$ Lichens $\rightarrow$ Shrubs $\rightarrow$ Trees. D) Lichens $\rightarrow$ Grasses $\rightarrow$ Shrubs $\rightarrow$ Trees. Show Answer Correct Answer: D) Lichens $\rightarrow$ Grasses $\rightarrow$ Shrubs $\rightarrow$ Trees. 18. Which relationship describes predator/prey A) Hawks and shrubs. B) Mountain lion and deer. C) Frogs and trees. D) Grasses and crickets. Show Answer Correct Answer: B) Mountain lion and deer. 19. Consumes producers A) Herbivore. B) Omnivore. Show Answer Correct Answer: A) Herbivore. 20. In which ocean zone is very little light found, so plants would be unlikely to survive? A) Benthic. B) Estuary. C) Intertidal. D) Neritic. Show Answer Correct Answer: A) Benthic. 21. When people destroy forests to build roads and homes, the changes in the forests ..... A) Cause destruction of habitats. B) Cause physical adaption. C) Cause migration. D) Cause camouflage. Show Answer Correct Answer: A) Cause destruction of habitats. 22. What is one way plants and animals are different? A) Plats do not need minerals and animals do. B) Plants produce their own food and animals do not. C) Plants do not produce oxygen and animals do. D) Plants need sunlight and animals do not. Show Answer Correct Answer: B) Plants produce their own food and animals do not. 23. What is the density of a liquid that has a mass of 27g and a volume of 30ml? A) 57 g/ml. B) 0.9 g/ml. C) 3 g/ml. D) 810 g/ml. Show Answer Correct Answer: B) 0.9 g/ml. 24. Group of the same species and live in the same area A) Community. B) Ecosystem. C) Population. D) None of above. Show Answer Correct Answer: C) Population. 25. Increased Carbon Dioxide in the atmosphere has formed a blanket around the planet and contributed to an ..... A) Increase in noise. B) Increase in ice around the planet. C) Increase in the temperature of the planet. D) Increase in parasites looking for hosts. Show Answer Correct Answer: C) Increase in the temperature of the planet. 26. Which of the following is not part of the nitrogen cycle: A) Nitrification. B) Ammonification. C) Transpiration. D) Rhizobacteria sp. Show Answer Correct Answer: C) Transpiration. 27. ..... are organisms that produce food for themselves and other organisms A) Nonliving. B) Producers. Show Answer Correct Answer: B) Producers. 28. Which watery biome has the highest concentration of salt? A) Estuary. B) Wetland. C) Freshwater. D) Coral reef. Show Answer Correct Answer: D) Coral reef. 29. Sunlight penetrates roughly 200 meters into the water A) False. B) True. Show Answer Correct Answer: B) True. 30. Respiration is the process by which ..... is consumed and ..... is produced. A) Oxygen, Carbon dioxide. B) H20, oxygen. C) Carbon, Oxygen. D) Carbon, H2O. Show Answer Correct Answer: A) Oxygen, Carbon dioxide. 31. One plant or animal is a ..... A) Individual. B) Ecosystem. C) Population. D) Community. Show Answer Correct Answer: A) Individual. 32. If fish are caught faster than they can breed the population will ..... A) Increase. B) Emigrate. C) Stay the same. D) Decrease. Show Answer Correct Answer: D) Decrease. 33. Sunlight, water, rocks are all Biotic Factors of an ecosystem. A) True. B) False. Show Answer Correct Answer: B) False. 34. A place where rubbish is thrown away. A) Recycle. B) Pollution. C) A dumping site. D) Sewage. Show Answer Correct Answer: C) A dumping site. 35. What level of organization is it when three foxes work together to catch fish from a stream A) Individual. B) Population. C) Ecosystem. D) Community. Show Answer Correct Answer: B) Population. 36. Four major resources that affect population density are habitat, food, mates, and ..... A) Air. B) Water. C) Stuff. D) None of above. Show Answer Correct Answer: B) Water. 37. This compound can only be broken down by bacteria in the roots or lightning A) Ill. B) Na. C) Type. D) START. Show Answer Correct Answer: B) Na. 38. Which of these scenarios is most like the relationship between a mosquito and a person? A) A tick feeding on a deer. B) A lion and a wildebeast. C) A goby fish and shrimp. D) A bear catching a fish. Show Answer Correct Answer: A) A tick feeding on a deer. 39. These type of consumers are animals that consume the carcasses of other animals that have been killed by predators or have died of other causes A) Carnivores. B) Omnivores. C) Scavengers. D) None of above. Show Answer Correct Answer: C) Scavengers. 40. What type of symbiosis occurs when two organisms benefit from having the other there? ex) algae provides food for fungi and fungi provide habitat for algae. A) Commensalism. B) Mutualism. C) Predation. D) Parasitism. Show Answer Correct Answer: B) Mutualism. 41. The top layer of an energy pyramid a primary consumer? A) False. B) True. Show Answer Correct Answer: A) False. 42. Which of the following describes a habitat? A) A single set of living things showing what eats what. B) Where a living thing lives. C) A complex diagram with lots of connections of living things showing what eats what. D) The conditions where something lives. Show Answer Correct Answer: B) Where a living thing lives. 43. Due to the fact that plants can make their own food using photosynthesis, what are plants considered in food chains? A) Consumbers. B) Producers. C) Carnivores. D) Omnivores. Show Answer Correct Answer: B) Producers. 44. What is the term for each step in the transfer of energy and matter within a food web? A) Food chain. B) Energy path. C) Trophic level. D) Food pyramid. Show Answer Correct Answer: C) Trophic level. 45. What is unicellular? A) One cell. B) Many cells. C) No nucleus. D) DNA. Show Answer Correct Answer: A) One cell. 46. An abandoned motel on HWY 17 that is now overgrown with trees and grass would be an example of A) Primary succession. B) Secondary succession. Show Answer Correct Answer: B) Secondary succession. 47. Which animal gives birth the same way as a dog? A) Dove. B) Dolphin. C) Gold fish. D) Lizard. Show Answer Correct Answer: B) Dolphin. 48. The island of Surtsey came up from the ocean in the 1960's. According to what you have learned about succession, what would you expect the pioneer species to be on this new island? A) Annual grasses. B) Wild flowers. C) Lichen. D) Any kind of plants that have roots. Show Answer Correct Answer: C) Lichen. 49. Why do living things need nitrogen? A) To get energy. B) To make amino acids. C) To make proteins. D) To make proteins AND amino acids. Show Answer Correct Answer: D) To make proteins AND amino acids. 50. Breaking News! A new island has formed off of Hawaii! What must occur for it to become an ecosystem? A) Primary Succession. B) Secondary Succession. C) Ferns must grow. D) Aquatic succession. Show Answer Correct Answer: A) Primary Succession. 51. Organisms belonging to the same species living together in the same place at the same time refer to a ..... A) Environment. B) Ecosystem. C) Community. D) Population. Show Answer Correct Answer: D) Population. 52. Which of the following will increase the size of a population? A) Emigration and births. B) Immigration and deaths. C) Immigration and births. D) Emigration and deaths. Show Answer Correct Answer: C) Immigration and births. 53. Producers are organisms that A) Break down dead organic matter. B) Must be plants. C) Convert light into chemical energy. D) Obtain energy from another organism they feed on. Show Answer Correct Answer: C) Convert light into chemical energy. 54. Acid rain can damage A) Drinking water sources. B) Aquatic (water) life. C) Architecture / buildings. D) All options are correct. Show Answer Correct Answer: D) All options are correct. 55. Which choice below lists the levels of organization in an ecosystem from the SMALLEST unit of organization to the LARGEST. A) Organism, population, ecosystem, community. B) Organism, community, population, ecosystem. C) Population, organism, community, ecosystem. D) Organism, population, community, ecosystem. Show Answer Correct Answer: D) Organism, population, community, ecosystem. 56. Which is a CON of selective breeding? A) Can lead to inbreeding. B) Can make species stronger. C) Can breed species humans find desirable. D) None of above. Show Answer Correct Answer: A) Can lead to inbreeding. 57. Organisms that cannot make their own energy are called ..... A) Producers. B) Scavengers. C) Herbivores. D) Consumers. Show Answer Correct Answer: D) Consumers. 58. Which of these sources of energy is a renewable one? A) Wind. B) Coal. C) Oil. D) None of above. Show Answer Correct Answer: A) Wind. 59. A bison walks through the grass, insects become active and are seen and eaten by the cowbird A) Predation. B) Competition. C) Parasitism. D) Mutualism. E) Commensalism. Show Answer Correct Answer: E) Commensalism. 60. After plants and animals contain nitrogen, what puts it back into atmosphere and soil? A) Condensation. B) Precipitation. C) Bacteria. D) Decomposition. Show Answer Correct Answer: D) Decomposition. ← PreviousNext →Related QuizzesScience QuizzesGeneral Knowledge QuizzesEcology Quiz 1Ecology Quiz 2Ecology Quiz 3Ecology Quiz 4Ecology Quiz 5Ecology Quiz 6Ecology Quiz 7Ecology Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books