This quiz works best with JavaScript enabled. Home > Science > Ecology – Quiz 168 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 168 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A gradual increase in the overall temperature of the earth's atmosphere generally attributed to the greenhouse effect A) Global warming. B) Pollution. C) Eutrophication. D) Agriculture. Show Answer Correct Answer: A) Global warming. 2. Which is an example of interspecific competition A) Trees in the rainforest competing for light. B) Tadpoles in a pond competing for food. C) Big horn sheep competing for mates. D) Wolves competing for food in the pack. Show Answer Correct Answer: A) Trees in the rainforest competing for light. 3. It is the upper limit of the biosphere A) Troposphere layer. B) Upper layer of the stratosphere. C) International space station. D) Ozone layer. Show Answer Correct Answer: D) Ozone layer. 4. Which is the best description of an ecosystem? A) All of the living and nonliving things in an area. B) All of the individuals of one species in an are. C) All of the populations of living things in an area. D) All of the abiotic factors in an area. Show Answer Correct Answer: A) All of the living and nonliving things in an area. 5. Events that take place in a biome are shown in the diagram below. What information is represented in the diagram? A) Respiration and photosynthesis are connected. B) Transpiration is related to the nitrogen level in bacteria. C) Relationship between Predators and their prey. D) Decomposers decompose organic materials and release nutrients that is utilized by other organisms. Show Answer Correct Answer: D) Decomposers decompose organic materials and release nutrients that is utilized by other organisms. 6. What is an animal that only eats meat called? A) Carnivore. B) Herbivore. C) Omnivore. D) None of above. Show Answer Correct Answer: A) Carnivore. 7. Factors in the environment that affect populations regardless of their density (examples:temperature, weather) A) Density-dependent. B) Density-independent. Show Answer Correct Answer: B) Density-independent. 8. Organic renewable resources come from living things A) Animals and trees. B) Wind and trees. C) Water and sun. D) None of above. Show Answer Correct Answer: A) Animals and trees. 9. The study of interactions between organisms and their environment is known as A) Ecology. B) Biome. C) Biology. D) Ecosystem. Show Answer Correct Answer: A) Ecology. 10. Represents a single pathway through which energy and matter flow A) Food chain. B) Food web. Show Answer Correct Answer: A) Food chain. 11. Which kind of growth does the human population follow? It is described as a J-shaped curve. A) Exponential Growth. B) Logistic Growth. C) Outstanding Growth. D) Minimal Growth. Show Answer Correct Answer: A) Exponential Growth. 12. All of the following are threats to biodiversity EXCEPT A) Overharvesting. B) Habitat fragmentation. C) Invasive species. D) Species preservation. Show Answer Correct Answer: D) Species preservation. 13. What does biodiversity mean? A) A lot of rain. B) Rich soil. C) Many kinds of plants and animals. D) Great climate differences. Show Answer Correct Answer: C) Many kinds of plants and animals. 14. A group of the same type of organisms living in the same place at the same time. A) House. B) Group. C) Population. D) Community. Show Answer Correct Answer: C) Population. 15. Aquatic biome that covers 3/4 of earth A) Marine. B) Freshwater. C) Savanna. D) Grassland. Show Answer Correct Answer: A) Marine. 16. In winter, a bat stays in its cave, and its body temperature drops, its heart rate slows to a fraction of its normal rate, and it is barely breathing. What is this behavior called? A) Migration. B) Hibernation. C) Courtship behavior. D) Territorial behavior. Show Answer Correct Answer: B) Hibernation. 17. Which biotic factor will have the greatest impact on the number of field mice living in a field? A) Water. B) Trees. C) Hawk. D) Forest fire. Show Answer Correct Answer: C) Hawk. 18. What word best describes mammals, fish, birds, and plants, as well as the sun, soil, air and water in an environment? A) Abiotic. B) Ecosystem. C) Community. D) Biosphere. Show Answer Correct Answer: B) Ecosystem. 19. Random changes in the DNA are- A) Natural selection. B) Mutations. C) Adaptations. D) Genetic migration. Show Answer Correct Answer: B) Mutations. 20. Rain, sleet, snow, and hail are all forms of ..... A) Percolation. B) Evaporation. C) Condensation. D) Precipitation. Show Answer Correct Answer: D) Precipitation. ← 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