This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 14 Ecosystem – Quiz 39 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 14 Ecosystem Quiz 39 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which term describes the ability of the natural or human system to recover after a disturbance? A) Ecosystem. B) Species. C) Biodiversity. D) Resilience. Show Answer Correct Answer: D) Resilience. 2. Cattle egrets are birds that forage in fields among cattle. The egrets get easy access to food and the cattle don't care if they are there or not. A) Mutualism. B) Commensalism. C) Competition. D) Parasitism. Show Answer Correct Answer: B) Commensalism. 3. What does sustainability mean? A) Avoiding the depletion of natural resources in order to maintain ecological balance. B) Using only fossil fuels. C) Using only non-renewable resources. D) None of the above. Show Answer Correct Answer: A) Avoiding the depletion of natural resources in order to maintain ecological balance. 4. What is considered the basic minimum success criteria for students in this module? A) To list all marsupials found in Australia. B) To draw a detailed map of Australia's ecosystems. C) To explain the photosynthesis process in Australian plants. D) To describe some changes in small animal populations in Australia. Show Answer Correct Answer: D) To describe some changes in small animal populations in Australia. 5. Gir forest is famous for its ..... A) Nilgai. B) Leopard. C) Jackal. D) Asiatic Lions. Show Answer Correct Answer: D) Asiatic Lions. 6. What is nitrogen fixation? A) The process of nitrogen being released into the atmosphere. B) The conversion of atmospheric nitrogen into a form plants can use. C) The absorption of nitrogen by animals. D) The breakdown of nitrogen compounds in soil. Show Answer Correct Answer: B) The conversion of atmospheric nitrogen into a form plants can use. 7. What does carrying capacity mean? A) The amount of abiotic factors present in the environment. B) The total number of species living in an ecosystem. C) The number of offspring one mother can have in a year. D) The number of organisms an ecosystem can sustain. Show Answer Correct Answer: D) The number of organisms an ecosystem can sustain. 8. Occurs when 2 or more organism use the same resource A) Competition. B) Mutualism. C) Commensalism. D) Parasitism. Show Answer Correct Answer: A) Competition. 9. Which is the smallest level of an ecosystem? A) Organsism. B) Population. C) Community. D) Ecosystem. Show Answer Correct Answer: A) Organsism. 10. What does 'Anthropocene' signify? A) A period of minimal human impact. B) The beginning of the Ice Age. C) The age of dinosaurs. D) A period of significant human impact on Earth's geology and ecosystems. Show Answer Correct Answer: D) A period of significant human impact on Earth's geology and ecosystems. 11. What are herbivores and provide an example? A) Herbivores are animals that primarily feed on rocks. An example of a herbivore is a lion. B) Herbivores are animals that primarily feed on other animals. An example of a herbivore is a shark. C) Herbivores are animals that primarily feed on air. An example of a herbivore is a bird. D) Herbivores are animals that primarily feed on plants. An example of a herbivore is a rabbit. Show Answer Correct Answer: D) Herbivores are animals that primarily feed on plants. An example of a herbivore is a rabbit. 12. An individual who eats plants and animals is called a(n) A) Herbivore. B) Omnivore. C) Carnivore. D) Decomposer. Show Answer Correct Answer: B) Omnivore. 13. A piece of equipment that can be used to sample ecosystems is called: A) Quadrat. B) Quadrant. C) Quadmouse. D) Quadraped. Show Answer Correct Answer: A) Quadrat. 14. Second Trophic Level A) Producer. B) Primary Consumer. C) Secondary Consumer. D) Tertiary Consumer. Show Answer Correct Answer: B) Primary Consumer. 15. The place where an organism lives is its ..... A) Habitat. B) Abiotic. C) Ecosystem. D) Community. Show Answer Correct Answer: A) Habitat. 16. What are the 2 types of niche? A) Ecosystem & population. B) Ecosystem & species. C) Ecological & population. D) Ecological & species. Show Answer Correct Answer: D) Ecological & species. 17. An example of Succulent plant is A) Neem. B) Banyan. C) Pistia. D) Cactus. Show Answer Correct Answer: D) Cactus. 18. For a given area and time period, the amount of solar energy converted to chemical energy in organic compounds is called A) Secondary succession. B) Secondary production. C) Primary production. D) Primary succession. Show Answer Correct Answer: C) Primary production. 19. The highest amount of an environmental factor that an organism can tolerate: A) Upper Limit. B) Lower Limit. C) Range of Tolerance. D) Invasive Species. Show Answer Correct Answer: A) Upper Limit. 20. Which is the best way to protect bald eagles from extinction? A) Create clones of the most fit eagles. B) Provide them more food. C) Protect their natural habitats. D) Increase natural predators. Show Answer Correct Answer: C) Protect their natural habitats. 21. When threatened, some animals make warning sounds to help other animals escape a predator. A) Behavioral Adaptation. B) Structural Adaptation. C) Physiolgoical. D) None of the above. Show Answer Correct Answer: A) Behavioral Adaptation. 22. Juanita is studying the food web of the open ocean. Which step would be most useful for her to follow to identify the primary producers of the food web? A) Look for floating plants, such as water lilies. B) Look for tiny phytoplankton that float on the ocean surface. C) Look for small animal plankton near the ocean surface. D) Look for plants or animals that live along the ocean floor. Show Answer Correct Answer: B) Look for tiny phytoplankton that float on the ocean surface. 23. Over a period of fifty years, the population of a city doubled. As a result, many new homes and shopping centers were built, and there are more cars, landfills, and sewage treatment plants. What is most likely the effect on the local environment? A) Reduction in animal habitats and in air quality. B) Increased smog and nonnative species. C) Decreased soil erosion and greenhouse gas production. D) Improved water quality and cooler temperatures. Show Answer Correct Answer: A) Reduction in animal habitats and in air quality. 24. How does a mutation in a cell's DNA potentially lead to cancer? A) By causing the cell to die immediately. B) By disrupting the normal cell cycle and leading to uncontrolled cell growth. C) By making the cell immune to viruses. D) By enhancing the cell's normal functions. Show Answer Correct Answer: B) By disrupting the normal cell cycle and leading to uncontrolled cell growth. 25. First level of Organization A) Cells. B) Tissues. C) Organs. D) Organ System. E) Organism. Show Answer Correct Answer: A) Cells. ← 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