This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 14 Ecosystem – Quiz 34 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 14 Ecosystem Quiz 34 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Gas analysis of ice cores in Antarctica has shown which trend over the last 100 years? A) Atmospheric concentrations of greenhouse gases have increased. B) There has been no change in atmospheric concentrations of greenhouse gases. C) Atmospheric concentrations of greenhouse gases have decreased. D) Global temperatures have decreased. Show Answer Correct Answer: A) Atmospheric concentrations of greenhouse gases have increased. 2. Estuaries form where A) A lake evaporates. B) A river meets the sea. C) A river becomes dammed. D) A wetland becomes filled in. Show Answer Correct Answer: B) A river meets the sea. 3. All of the grasses, deer, birds, wolves, rocks and weather in an area create what? A) An organism. B) A population. C) A community. D) An ecosystem. Show Answer Correct Answer: D) An ecosystem. 4. Earth has a fixed amount of ..... A) Trees. B) Carbon. C) Carbon dioxide. D) None of the above. Show Answer Correct Answer: B) Carbon. 5. Which definition matches species? A) All non-living parts of an area. B) All organisms in one ecosystem. C) Organisms that interbreed producing fertile offspring. D) Organisms that share a habitat. Show Answer Correct Answer: C) Organisms that interbreed producing fertile offspring. 6. Term given to describe the 2 part (name) naming system is: A) Dichotmous key. B) Binomial nomenclature. C) 2 scientific names. D) Binomial key. Show Answer Correct Answer: B) Binomial nomenclature. 7. The adaptation of a species, its needs, the territory it can live in, etc., are known as: A) Intraspecific interaction. B) Group adaptation. C) Ecological characteristics. D) Ecological niche. Show Answer Correct Answer: C) Ecological characteristics. 8. Which of the following describes water, food, competition and mates? A) Limiting factors. B) Carrying capacity. C) Resources. D) Water works. Show Answer Correct Answer: A) Limiting factors. 9. What are abiotic factors? A) Non-living factors like temperature and moisture. B) Factors influenced by living things like availability of food. C) Organisms of the same species. D) Animals and plants adapting to their environment. Show Answer Correct Answer: A) Non-living factors like temperature and moisture. 10. If conditions fall above or below the optimum range an organisms will experience A) Death. B) Adaptation. C) Stress. D) Tolerance. Show Answer Correct Answer: C) Stress. 11. What percentage of energy is passed on for storage to each tropic level? A) 10%. B) 50%. C) 90%. D) 100%. Show Answer Correct Answer: A) 10%. 12. Which of the animals is a vertebrate? A) Snail. B) Snake. C) Butterfly. D) Ladybug. Show Answer Correct Answer: B) Snake. 13. Where are autotrophs found in food chains/webs A) In the middle. B) At every level. C) At the first level. D) At the top. Show Answer Correct Answer: C) At the first level. 14. During a long period when there is no rainfall, a mountain lion may temporarily leave its usual hunting territory to drink from a farm pond. To what is this behavior probably due? A) Its need to find different foods to eat. B) The change in an abiotic factor in its environment. C) Its need to find a new habitat. D) The change in a biotic factor in its environment. Show Answer Correct Answer: B) The change in an abiotic factor in its environment. 15. What does a significant reduction in a species' population lead to? A) An increase in biodiversity. B) A decrease in genetic problems. C) A significant reduction in the gene pool. D) An increase in land availability. Show Answer Correct Answer: C) A significant reduction in the gene pool. 16. Living is called: A) Dead. B) Alive. C) Abiotic. D) Biotic. Show Answer Correct Answer: D) Biotic. 17. A relationship between two organisms in which one organism benefits and the other is harmed. A) Mutualism. B) Competition. C) Parasitsm. D) Commensalism. Show Answer Correct Answer: C) Parasitsm. 18. The ecosytem is the physical environment in which a species lives and to which it is adapted. A ecosystems's features are determined mainly by abiotic factors such as temperature and rainfall. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 19. Why doesn't exponential growth last? A) Populations stop reproducing. B) Resources become limited. C) Predators disappear. D) Immigration stops. Show Answer Correct Answer: B) Resources become limited. 20. Many insects are attracted to light and move toward it. This is an example of what kind of behavior? A) Conditioning. B) Habituation. C) Imprinting. D) Taxis. Show Answer Correct Answer: D) Taxis. 21. Latitude is ..... A) The average weather conditions in an area over a long period of time. B) The day to day state of the atmosphere, including temperature, humidity, precipitation, and wind. C) The distance north or south from the equator, expressed in degrees. D) Winds that blow mainly from 1 direction. Show Answer Correct Answer: C) The distance north or south from the equator, expressed in degrees. 22. Karen is classifying a group of organisms that are either primary producers or consumers. What is the direct source of energy for all of the consumers? A) Either producers or other consumers. B) Producers only. C) Nonliving sources, such as sunlight. D) Other consumers only. Show Answer Correct Answer: A) Either producers or other consumers. 23. Which of the following describes parasitism? A) Fern plant growing on a trunk of a tree. B) Barnacle sticking on the shell of an oyster. C) An orchid living on a truck of a mahogany tree. D) An insect larva staying under the leaves of a plant. Show Answer Correct Answer: D) An insect larva staying under the leaves of a plant. 24. Which represents primary succession? A) Grass $\rightarrow$ shrubs $\rightarrow$ trees. B) Bare rock $\rightarrow$ lichens $\rightarrow$ moss $\rightarrow$ grasses $\rightarrow$ trees. C) Mature forest $\rightarrow$ shrubs. D) Herbivores $\rightarrow$ carnivores. Show Answer Correct Answer: B) Bare rock $\rightarrow$ lichens $\rightarrow$ moss $\rightarrow$ grasses $\rightarrow$ trees. 25. (a):The largest number of individuals that an environment can support. A) A. Carrying Capacity. B) Biodiversity. C) Limiting Factors. D) None of the above. Show Answer Correct Answer: A) A. Carrying Capacity. ← PreviousNext →Related QuizzesClass 12 Biology Chapter 14 Ecosystem Quiz 1Class 12 Biology Chapter 14 Ecosystem Quiz 2Class 12 Biology Chapter 14 Ecosystem Quiz 3Class 12 Biology Chapter 14 Ecosystem Quiz 4Class 12 Biology Chapter 14 Ecosystem Quiz 5Class 12 Biology Chapter 14 Ecosystem Quiz 6Class 12 Biology Chapter 14 Ecosystem Quiz 7Class 12 Biology Chapter 14 Ecosystem Quiz 8Class 12 Biology Chapter 14 Ecosystem Quiz 9Class 12 Biology Chapter 14 Ecosystem Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books