This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Earth > Ecology – Quiz 81 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 81 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which type of organism is responsible for recycling the remains of a dead plant or animal to the soil? A) Producer. B) Consumer. C) Decoposer. D) None of above. Show Answer Correct Answer: C) Decoposer. 2. A lichen is a combination of fungus and algae that lives on the sides of trees, rocks, and other materials. The fungus provides the algae with water and minerals and the algae uses the water and minerals to make food for both organisms. What type of relationship does the lichen represent? A) Parasitism. B) Predation. C) Commensal. D) Mutualism. Show Answer Correct Answer: D) Mutualism. 3. Water droplets fall from the atmosphere as condensation. A) True. B) False. Show Answer Correct Answer: B) False. 4. What is the part of the water cycle when water evaporates from plants called? A) Transpiration. B) Percolation. C) Condensation. D) Precipitation. Show Answer Correct Answer: A) Transpiration. 5. Reaches a climax community quicker because soil is already present A) Primary succession. B) Secondary succession. C) Both types of succession. D) None of above. Show Answer Correct Answer: B) Secondary succession. 6. The green pigment found in plant leaves is ..... A) Cytoplasm. B) Chlorophyll. C) Chloroplasts. D) Chloroform. Show Answer Correct Answer: B) Chlorophyll. 7. Different populations that live in the same area A) Community. B) Ecosystem. C) Organism. D) Biosphere. Show Answer Correct Answer: A) Community. 8. Read the definition:All weather conditions for a given location over a period. A) Climate. B) Weather. C) Clime. D) None of above. Show Answer Correct Answer: A) Climate. 9. Why is a mountain not included in a biome? A) Rocks aren't living things. B) The climate is the same all the way up the mountain. C) The climate changes too much as you go up the mountain. D) Not every biome has mountains. Show Answer Correct Answer: C) The climate changes too much as you go up the mountain. 10. A collection of organisms that belong to different populations but all live in the same area and interact with one another. A) Community. B) Ecosystem. C) Ecosphere. D) Population. Show Answer Correct Answer: A) Community. 11. What is the term given to a group of populations of different species living in given area? A) Community. B) Ecosystem. C) Population. D) Habitat. Show Answer Correct Answer: A) Community. 12. A species that is in danger of dying out is called: A) Population. B) Community. C) Endangered. D) Extinct. Show Answer Correct Answer: C) Endangered. 13. Herbivores are..... A) Producers. B) Consumers. C) Decomposers. D) All three. Show Answer Correct Answer: B) Consumers. 14. As the world population increases A) Carbon dioxide decreases. B) Carbon dioxide increases. Show Answer Correct Answer: B) Carbon dioxide increases. 15. Phytoplankton $\rightarrow$ Zooplankton $\rightarrow$Minnows (small fish) $\rightarrow$ Perch (bigger fish)$\rightarrow$ Osprey (a bird)Which organism is at trophic level 4? A) Phytoplankton. B) Perch. C) Zooplankton. D) Minnows. Show Answer Correct Answer: B) Perch. 16. Archeabacteria ..... A) Live in extreme environments. B) Live in the soil. C) Are eukaryotic. D) Are non-living. Show Answer Correct Answer: A) Live in extreme environments. 17. The highest level of an organization A) Population. B) Biosphere. C) Organism. D) Ecosystem. Show Answer Correct Answer: B) Biosphere. 18. ..... is the average pattern for weather over a long period of time. A) Weather. B) Climate. C) Forecast. D) Sunlight. Show Answer Correct Answer: B) Climate. 19. All of the members of a species that occupy a certain area are defined as- A) Community. B) Ecosystem. C) Organism. D) Population. Show Answer Correct Answer: D) Population. 20. The living components of the bioshpere A) Niche. B) Producer. C) Abiotic factor. D) Biotic factor. Show Answer Correct Answer: D) Biotic factor. 21. Which zone has the role of-phytoplankton:serves as the base of the lake's food chain and producing oxygen A) Photic zone. B) Limnetic zone. C) Aphotic zone. D) Littoral zone. Show Answer Correct Answer: B) Limnetic zone. 22. Abby is walking to school with her best friend Jaylyn. They begin talking about everything they see including the ash trees, grass, weeds, ants, and people. They also notice how cold it is, how there are several large puffy clouds out, and how the sun is just starting to come up. What level of organization are they discussing? A) Biome. B) Community. C) Ecosystem. D) Biosphere. Show Answer Correct Answer: C) Ecosystem. 23. Explain why invertebrates are placed directly above the phytoplankton in this energy pyramid A) Because the fish can only get energy from the sun. B) Because the invertebrates can only get energy from the bass. C) Because the plankton can only get energy from the sun. D) Because the birds can only get energy from the fish. Show Answer Correct Answer: C) Because the plankton can only get energy from the sun. 24. Which describes the deep-water zone? A) It gets a lot of sunlight. B) It get no sunlight. C) No fish live there. D) Cattails and rushes grow there. Show Answer Correct Answer: B) It get no sunlight. 25. Which of the following breaks down organic matter and returns nutrients back to the soil? A) Herbivores. B) Decomposers. C) Scavengers. D) Omnivores. Show Answer Correct Answer: B) Decomposers. 26. Which of the following receives energy directly from the sun? A) Producers. B) Decomposers. C) Consumers. D) Inorganic Nutrients. Show Answer Correct Answer: A) Producers. 27. One organisms benefits and the other is not affect is known as A) Commensalism. B) Symbiosis. C) Parasitism. D) Mutualism. Show Answer Correct Answer: A) Commensalism. 28. The ability of the ecosystem to support organisms. A) Carrying Capacity. B) Optimum range. C) Limiting factor. D) Tolerance range. Show Answer Correct Answer: A) Carrying Capacity. 29. Decomposers are important because they return ..... to the soil for new producers to use and grow. A) Producers. B) Oxygen. C) Nutrients. D) Nitrogen. Show Answer Correct Answer: C) Nutrients. 30. Bacteria in an environment are special because they return dead material to the soil. This special role is given the name A) Scavenger. B) Producer. C) Decoposer. D) Consumer. Show Answer Correct Answer: C) Decoposer. 31. Part of a cycle that holds an element or water for a short period of time is a reservoir pool. A) True. B) False. Show Answer Correct Answer: B) False. 32. Which of the following best describes a population? A) All the organisms of a certain species in a given area. B) All the organisms in a habitat that compete for resources. C) One individual and all the organisms on which it depends. D) All of the living organisms which can be found in an area. Show Answer Correct Answer: A) All the organisms of a certain species in a given area. 33. A group of closely related organisms that are very similar to each other and are able to reproduce? A) Ecosystem. B) Environment. C) Species. D) Community. Show Answer Correct Answer: C) Species. 34. Which of the following is a part of an ecosystem that can die without affecting the ecosystems functionality? A) Plant. B) Water. C) Sunlight. D) None of the above. Show Answer Correct Answer: D) None of the above. 35. Which of these statements is the most complete definition of ecology? A) The study of the environment, in particular how to preserve it. B) The study of the environment, in particular how to save endangered species. C) The study of the interactions between organisms in terms of competition and predation. D) The study of the interactions between organisms and their environment. Show Answer Correct Answer: D) The study of the interactions between organisms and their environment. 36. Because of the permafrost, plants in the tundra have: A) Shallow root systems. B) Smaller leaves. C) Tiny hairs to collect water. D) Deep root systems. Show Answer Correct Answer: A) Shallow root systems. 37. What is the term that describes a steady and stable community? A) Turf community. B) Climax community. C) Disturbed community. D) Peak community. Show Answer Correct Answer: B) Climax community. 38. Which example shows a relationship between a living thing and a non-living thing? A) A flower makes food for a butterfly. B) Water carries a rock downstream. C) An insect is food for salmon. D) A tree gets nutrients from the soil. Show Answer Correct Answer: D) A tree gets nutrients from the soil. 39. Population of animal or plant at risk fo Extinction A) Endangered Species. B) Threaten Species. C) Extinction. D) None of above. Show Answer Correct Answer: A) Endangered Species. 40. Ecosystem with different kinds of plants & animals, determined by climate: A) Habitat. B) Biome. C) Water Cycle. D) Biosphere. Show Answer Correct Answer: B) Biome. 41. What will happen because of the heavy global use of fossil fuels? A) They will form again. B) The reserves will be used up. C) The reserves will not be affected. D) The price of fossil fuels will go down. Show Answer Correct Answer: B) The reserves will be used up. 42. The organism at the beginning of the food chain is called? A) Producer. B) Predator. C) Decoposer. D) Consumer. Show Answer Correct Answer: A) Producer. 43. A jar has two fish in it. What will happen? A) Carbon dioxide will increase. B) Nitrogen will decrease. C) Oxygen will increase. D) Carbon dioxide will decrease. Show Answer Correct Answer: A) Carbon dioxide will increase. 44. An omnivore is a ..... A) Consumer that eats both plants and other animals. B) Consumer that eats only other animals. C) Consumer that eats only plants. D) None of above. Show Answer Correct Answer: A) Consumer that eats both plants and other animals. 45. Ecosystem includes both the biotic and abiotic factors. A) False. B) True. Show Answer Correct Answer: B) True. 46. The very first species to show up at the beginning of succession are called ..... A) Pioneer species. B) Keystone species. C) Introduced species. D) Indicator species. Show Answer Correct Answer: A) Pioneer species. 47. A penguin is white on its belly and black on its back so it harder to see underwater from above and below. A) Physical/Structural Adaptation. B) Behavioral Adaptation. Show Answer Correct Answer: A) Physical/Structural Adaptation. 48. Which of the following is a key characteristic of most invasive species? A) Produce many offspring. B) Is a top predator. C) Ability to breathe in the air & in the water. D) Large, sharp teeth. Show Answer Correct Answer: A) Produce many offspring. 49. Carbon cycles between the biotic & abiotic worlds through the processes of ..... A) Cellular respiration & transpiration. B) Evaporation & photosynthesis. C) Transpiration & photosynthesis. D) Cellular respiration & photosynthesis. Show Answer Correct Answer: D) Cellular respiration & photosynthesis. 50. A place in the environment where a living organisms lives and grows naturally is known as A) Interaction. B) Abiotic. C) Habitat. D) Biotic. Show Answer Correct Answer: C) Habitat. 51. 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 monkeys that live there. D) The rocks found there. Show Answer Correct Answer: C) The monkeys that live there. 52. 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. 53. Which of the following is the 1st order consumer? A) Malnutrition. B) Executives. C) Beasts. D) Parasites. E) Herbivores. Show Answer Correct Answer: E) Herbivores. 54. 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. 55. 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. 56. The living parts of an organisms environment are called its ..... A) Abiotic factors. B) Biotic factors. C) Habitat. D) Community. Show Answer Correct Answer: B) Biotic factors. 57. 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. 58. ..... are the first organisms to colonize an area and begin the process of ecological succession. A) Foundational organisms. B) Pioneer species. C) Introductory organisms. D) Primary organisms. Show Answer Correct Answer: B) Pioneer species. 59. The variety of organisms considered at all levels from populations to ecosystems A) Biodiversity. B) Subspecies. C) Binomial Nomenclature. D) Taxonomy. Show Answer Correct Answer: A) Biodiversity. 60. The match of a species to a specific environmental condition: A) Habitat. B) Niche. C) Individual. D) Partner. Show Answer Correct Answer: B) Niche. ← 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