This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 14 Ecosystem – Quiz 25 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 14 Ecosystem Quiz 25 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Several food chains interconnected together create a ..... A) A long food chain. B) A food diagram. C) Living things. D) A food web. Show Answer Correct Answer: D) A food web. 2. When organisms of different species interact over things such as food it is described as: A) Interspecific. B) Intraspecific. C) Species specific. D) Counter specific. Show Answer Correct Answer: A) Interspecific. 3. What limits the length of a food chain in an ecosystem? A) The size of the individual organisms. B) Competition between organisms. C) The loss of energy between trophic levels. D) Natural selection. Show Answer Correct Answer: C) The loss of energy between trophic levels. 4. Some herbivore-plant interactions evolved through a series of reciprocal evolutionary adaptations in both species. The process is called A) Coevolution. B) Herbivory. C) Selection. D) Trophism. Show Answer Correct Answer: A) Coevolution. 5. Carla claims that a strain of rose bushes is resilient to temperatures as low as 5 degrees C. Which statement about rose bushes of this strain can be inferred from Carla's claim? A) They grow better at 5 degrees C than at higher temperatures. B) They grow better at higher temperatures, but can survive at 5 degrees C. C) They grow as well at 5 degrees C as at higher temperatures. D) They can survive at 5 degrees C without inputs such as water and sunlight. Show Answer Correct Answer: B) They grow better at higher temperatures, but can survive at 5 degrees C. 6. A short plant with a thick, fleshy stem, extensive roots, and a short blooming period would MOST likely be found in which of the following environments? A) Prairie. B) Desert. C) Coniferous forest. D) Deciduous forest. Show Answer Correct Answer: B) Desert. 7. Explain the concept of a food chain in an ecosystem. A) A food chain is a physical chain made of food items in an ecosystem. B) A food chain shows the flow of energy and nutrients from one organism to another in an ecosystem. C) A food chain is a hierarchy of restaurants in an ecosystem. D) A food chain is a type of fishing net used to catch food in an ecosystem. Show Answer Correct Answer: B) A food chain shows the flow of energy and nutrients from one organism to another in an ecosystem. 8. Living Organisms that decompose animals and plants are called A) Producers. B) Consumers. C) Decomposers. D) Carnivores. Show Answer Correct Answer: C) Decomposers. 9. In the woods, there are hawks and robins. They both try to occupy the same niche by competing for worms as the only source of food in that same area at that same time. The hawks outcompete the robins, and the robins are forced to leave that area. This is an example of: A) Mutualism. B) The competitive exclusion principle. C) Commensalism. D) Neutralism. Show Answer Correct Answer: B) The competitive exclusion principle. 10. The physical part of the ecosystem that meets the needs of an organism is called: A) Role. B) Ecosystem. C) Habitat. D) Population. Show Answer Correct Answer: C) Habitat. 11. Which of the following explains why producers are always found at the beginning of a food chain? A) Consumers are eaten by a variety of producers. B) Producers convert light energy into chemical energy. C) Producers are larger than consumers. D) Producers are found in fewer numbers than consumers. Show Answer Correct Answer: B) Producers convert light energy into chemical energy. 12. When a New England farm is abandoned, its formerly plowed fields first become weedy meadows, then shrubby areas, and finally forest. This sequence of plant communities is an example of A) Secondary succession. B) Evolution. C) Primary succession. D) A trophic chain. Show Answer Correct Answer: A) Secondary succession. 13. Can cause extinctions of organism A) Short term impact. B) Long term impact. C) All the above. D) None of the above. Show Answer Correct Answer: B) Long term impact. 14. Place where an organism spends its life A) Niche. B) Habitiat. C) Biolgical community. D) Ecosystem. Show Answer Correct Answer: B) Habitiat. 15. Which of the following organisms is a consumer? A) Bacteria. B) Hawk. C) Mushroom. D) None of the above. Show Answer Correct Answer: B) Hawk. 16. Rainfall in a tropical evergreen forest is A) 75 cm to 150cm. B) 20cm to 60cm. C) More than 200 cm. D) 75cm to 200 cm. Show Answer Correct Answer: C) More than 200 cm. 17. Which of the following describes carrying capacity? A) The maximum number of individuals a population can support. B) The minimum number of individuals a population can support. C) How much water a population has to use. D) The amount of food available for a population. Show Answer Correct Answer: A) The maximum number of individuals a population can support. 18. Which best describes the role of a producer in an ecosystem? A) A producer supplies energy for the consumers in the ecosystem. B) A producer supplies oxygen for the consumers in the ecosystem. C) A producer supplies water for the consumers in the ecosystem. D) A producer supplies light for the consumers in the ecosystem. Show Answer Correct Answer: A) A producer supplies energy for the consumers in the ecosystem. 19. More successful ecosystems will have: A) Fewer, complex, food chains. B) Fewer, basic, food chains. C) Many, complex, food chains. D) Many, basic, food chains. Show Answer Correct Answer: C) Many, complex, food chains. 20. What is the role of decomposers in the biogeochemical cycles? A) Decomposers break down organic matter and release nutrients back into the environment. B) Decomposers have no role in biogeochemical cycles. C) Decomposers contribute to the accumulation of organic matter. D) Decomposers absorb nutrients from the environment. Show Answer Correct Answer: A) Decomposers break down organic matter and release nutrients back into the environment. 21. What are consumers that eat only plants A) Herbivores. B) Omnivores. C) Carnivores. D) None of the above. Show Answer Correct Answer: A) Herbivores. 22. Which human activity has had the greatest impact on climate change? A) Building skyscrapers. B) Deforestation. C) Burning fossil fuels. D) Production of nuclear waste. Show Answer Correct Answer: C) Burning fossil fuels. 23. Which statement is true for BOTH food chains and food webs? A) They show only one feeding pathway. B) They include producers and consumers and show energy flow. C) They exist only in grasslands. D) They exclude apex predators. Show Answer Correct Answer: B) They include producers and consumers and show energy flow. 24. What is the word equation for Cellular Respiration? A) Carbon dioxide + energy $\rightarrow$ water + energy + glucose. B) Oxygen + glucose + water $\rightarrow$ carbon dioxide + energy. C) Oxygen + glucose $\rightarrow$ water + carbon dioxide + energy. D) None of the above. Show Answer Correct Answer: C) Oxygen + glucose $\rightarrow$ water + carbon dioxide + energy. 25. States that no 2 species can occupy the same niche at the same time A) Competitive exclusion principle. B) Ecology. C) Niche vs habitat. D) Frask's ecology statement. Show Answer Correct Answer: A) Competitive exclusion principle. ← 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