This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 14 Ecosystem – Quiz 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 14 Ecosystem Quiz 3 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Define community. A) Group of organisms living and interacting with each other in an area. B) Group of populations living and interacting with each other in an area. C) Group of organisms living and interacting with each other in an area at the same time. D) Abiotic and biotic factors that affect a population. Show Answer Correct Answer: B) Group of populations living and interacting with each other in an area. 2. Usually at the beginning of the food chain. Organisms that get their energy directly from the sun and can make their own food. A) Producers. B) Consumers. C) Decomposers. D) None of the above. Show Answer Correct Answer: A) Producers. 3. Consumers obtain energy source by: A) Consuming other organisms that are living or recently killed. B) Absorbing heat from their surroundings and converting it into chemical energy. C) By internally digesting deceased/decaying organisms. D) By externally digesting deceased/decaying organisms. Show Answer Correct Answer: A) Consuming other organisms that are living or recently killed. 4. If 100% energy is available in the first trophic level, how much energy is available for the next trophic level? A) 100%. B) 10%. C) 1%. D) 0.01%. Show Answer Correct Answer: B) 10%. 5. (10) Which land biome has warm summers and very cold winters with an average amount of precipitation and trees with seeds protected by cones? A) Tropical rainforest. B) Temperate grassland. C) Tundra. D) Coniferous forest. Show Answer Correct Answer: D) Coniferous forest. 6. What type of speciation is exemplified by the evolution that occurred on the Australian continent? A) Peripatric speciation. B) Allopatric speciation. C) Sympatric speciation. D) Parapatric speciation. Show Answer Correct Answer: B) Allopatric speciation. 7. Where an organism lives and what it does "for a living" A) Primary succession. B) Secondary succession. C) Niche. D) None of the above. Show Answer Correct Answer: C) Niche. 8. How many quadrats will of 1m$^{2}$ will fit into a field that is 20m long by 30 m wide A) 5. B) 6. C) 500. D) 600. Show Answer Correct Answer: D) 600. 9. Ants, birds, rabbits, and snakes are ..... A) Biotic. B) Abiotic. C) All the above. D) None of the above. Show Answer Correct Answer: A) Biotic. 10. A ..... is the populations of two or more species within the same geographical area and time period. A) Biome. B) Ecosystem. C) Community. D) Population. Show Answer Correct Answer: C) Community. 11. Which will most likely result in a negative growth rate in the human population of a country? A) The death rate is higher than the birth rate. B) The birth rate is higher than the death rate. C) The country has improved economic conditions. D) The country has made improvements in sanitation. Show Answer Correct Answer: A) The death rate is higher than the birth rate. 12. What does the energy pyramid show? A) Energy increases as it moves up trophic levels. B) The same amount of energy exists at all levels. C) Energy decreases at each level because only ~10% is passed on. D) Only consumers contain energy. Show Answer Correct Answer: C) Energy decreases at each level because only ~10% is passed on. 13. In the sea, little fish called pilot fish swim closely to sharks. The pilot fish clean the sharks, and the sharks provide protection for the pilot fish. What type of symbiosis is this? A) Mutualism. B) Commensalism. C) Parasitism. D) Amensalism. Show Answer Correct Answer: A) Mutualism. 14. Tick (/) the correct sequence that describes the flow of energy in an ecosystem. A) Carnivore $\rightarrow$ herbivore $\rightarrow$ plant $\rightarrow$ Sun. B) Herbivore $\rightarrow$ plant $\rightarrow$ carnivore $\rightarrow$ Sun. C) Sun $\rightarrow$ plant $\rightarrow$ carnivore $\rightarrow$ herbivore. D) Sun $\rightarrow$ plant $\rightarrow$ herbivore $\rightarrow$ carnivore. Show Answer Correct Answer: D) Sun $\rightarrow$ plant $\rightarrow$ herbivore $\rightarrow$ carnivore. 15. For fallen leaves, vegitable wastes the ecofriendly action is A) Burning them. B) Left as it is. C) Convert into compost manure. D) Thrown into dustbin. Show Answer Correct Answer: C) Convert into compost manure. 16. A farmer plants two species of grass with similar nutrient needs on the same small plot of land. What kind of interaction will most likely occur between the two species? A) Parasitism. B) Competition. C) Commensalism. D) Mutualism. Show Answer Correct Answer: B) Competition. 17. What is the term used to describe the diverse range of living organisms found in a particular environment? A) Ecosystem. B) Biodiversity. C) Niche. D) Biome. Show Answer Correct Answer: B) Biodiversity. 18. When you step out into the cold, your body shivers in order to keep its temperature at 98.6F. Which characteristic of life does this represent? A) All living things use energy. B) All living things contain cells. C) All living things maintain homeostasis. D) All living things grow. Show Answer Correct Answer: C) All living things maintain homeostasis. 19. What is ecology? A) The scientific study about interaction among organisms and their interaction. B) The study of living things. C) Study of the organisms's habitat. D) Study of matter. Show Answer Correct Answer: A) The scientific study about interaction among organisms and their interaction. 20. What are the different stages of ecological succession? A) Primary succession and secondary succession. B) Initial succession and final succession. C) First succession and last succession. D) Early succession and late succession. Show Answer Correct Answer: A) Primary succession and secondary succession. 21. The study of the relationship between plants, animals, and their environment is called: A) Ecology. B) Psychology. C) Biology. D) Sociology. Show Answer Correct Answer: A) Ecology. 22. The total of all different forms of genes present in a particular species. A) Ecosystem Diversity. B) Genetic Diversity. C) Species Diversity. D) Biosphere diversity. Show Answer Correct Answer: B) Genetic Diversity. 23. Mushrooms get their energy by: A) Consuming living organisms. B) Converting energy in their surroundings in chemical energy. C) Internally digesting deceased organisms. D) Externally digesting deceased organisms. Show Answer Correct Answer: D) Externally digesting deceased organisms. 24. Why is biodiversity important for ecosystem productivity? A) Only affects the aesthetic value of the ecosystem. B) It has no impact on productivity. C) Decreases resilience to diseases. D) Increases resilience and productivity. Show Answer Correct Answer: D) Increases resilience and productivity. 25. What is the maximum number of individuals of one species that the environment can support? A) Overload capacity. B) Top capacity. C) Population. D) Carrying capacity. Show Answer Correct Answer: D) 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 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 10Class 12 Biology Chapter 14 Ecosystem Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books