This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 14 Ecosystem – Quiz 38 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 14 Ecosystem Quiz 38 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is one ethical issue associated with biotechnology? A) It has no ethical issues. B) The potential for genetic discrimination. C) It only affects plant growth. D) It is universally accepted without controversy. Show Answer Correct Answer: B) The potential for genetic discrimination. 2. What are epicormic buds? A) Seed pods that open underwater. B) Flower buds that bloom in winter. C) Buds under the bark that grow after fire. D) Root structures for water absorption. Show Answer Correct Answer: C) Buds under the bark that grow after fire. 3. Name This Relationship:Plants in a dense rainforest A) Predation. B) Competition. C) Parasitism. D) Commensalism. Show Answer Correct Answer: B) Competition. 4. What do carnivores eat? A) Animals. B) Plants. C) Meat. D) Plants and Animals. Show Answer Correct Answer: A) Animals. 5. What is the main difference between a food chain and a food web? A) Chains show many feeding paths; webs show only one. B) Chains show one single path; webs show many interconnected paths. C) Only webs show predators. D) Only chains include producers. Show Answer Correct Answer: B) Chains show one single path; webs show many interconnected paths. 6. Which of the following would be a density-dependent limiting factor? A) Two wolf packs having overlapping territories. B) Pollution. C) A flood. D) Deforestation. Show Answer Correct Answer: A) Two wolf packs having overlapping territories. 7. How can biotechnology impact the environment positively? A) By reducing biodiversity. B) By increasing pollution. C) By developing crops that require fewer resources. D) By eliminating natural habitats. Show Answer Correct Answer: C) By developing crops that require fewer resources. 8. What is logistic growth? A) A model of growth that is unrealistic. B) A more realistic model of growth. C) A model of growth that is linear. D) A model of growth that is exponential. Show Answer Correct Answer: B) A more realistic model of growth. 9. The parasite tapeworm lives in the ..... A) Stomach. B) Brain. C) Blood. D) Intestine. Show Answer Correct Answer: D) Intestine. 10. What is the area of a quadrat that as sides of 0.5m in length? A) 0.5m$^{2}$. B) 0.25m$^{2}$. C) 1m$^{2}$. D) 2m$^{2}$. Show Answer Correct Answer: B) 0.25m$^{2}$. 11. Step in the passage of energy and matter through an ecosystem A) Food chain. B) Trophic level. C) Habitat. D) Niche. Show Answer Correct Answer: B) Trophic level. 12. True or False:Resilient ecosystems have some ability to adapt to changes over time A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 13. Define carrying capacity. A) The total number of species in an ecosystem. B) The maximum population size that an environment can sustain indefinitely. C) The average lifespan of a species in a habitat. D) The minimum resources required for a species to survive. Show Answer Correct Answer: B) The maximum population size that an environment can sustain indefinitely. 14. Anything living such as an animal, plant, insect, bacteria, etc. A) Terrarium. B) Living Things. C) Rainforests. D) Non Living Things. Show Answer Correct Answer: B) Living Things. 15. What adaptation do kangaroos have for efficient movement? A) Webbed feet for swimming. B) Unique hopping locomotion. C) Wings for short flights. D) Slithering movement like snakes. Show Answer Correct Answer: B) Unique hopping locomotion. 16. What will most likely occur if the population of the world continues to increase at predicted rates? A) There will be an increase in biodiversity as a result of improvements in technology. B) Many organisms will lose their homes because their habitats have been destroyed. C) The human race will rapidly become extinct. D) All human diseases will be eliminated. Show Answer Correct Answer: B) Many organisms will lose their homes because their habitats have been destroyed. 17. Abiotic factors include ..... A) Living things like animals, fungi, and plants. B) Landfills. C) Nonliving things like soil, rocks, and water. D) Both living and nonliving things. Show Answer Correct Answer: C) Nonliving things like soil, rocks, and water. 18. These organisms must eat to obtain their energy A) Autotrophs. B) Heterotrophs. C) Producers. D) Niche. Show Answer Correct Answer: B) Heterotrophs. 19. Exponential growth appears as: A) Straight line. B) J-shaped curve. C) S-shaped curve. D) Flat line. Show Answer Correct Answer: B) J-shaped curve. 20. What is a common method of seed dispersal among Australian flora? A) Wind dispersal. B) Water jet propulsion. C) Sunlight reflection. D) Electrical discharge. Show Answer Correct Answer: A) Wind dispersal. 21. What cell part captures the sun's energy and allow plants to make their own food? A) Cytoplasm. B) Chloroplasts. C) Nucleus. D) Cell membrane. Show Answer Correct Answer: B) Chloroplasts. 22. Mushrooms, mould and yeast belong to ..... A) Fungi kingdom. B) Monera kingdom. C) Protista kingdom. D) Mammals. Show Answer Correct Answer: A) Fungi kingdom. 23. In nature, which type of behavior causes animals to produce aggressive displays and sounds? A) Imprinting. B) Territoriality. C) Conditioning. D) Habituation. Show Answer Correct Answer: B) Territoriality. 24. ..... is a proposed answer to a question. A) Hypothesis. B) Claim. C) Arguement. D) Evidence. Show Answer Correct Answer: B) Claim. 25. Over a long period of time, a lake ecosystem can become a forest ecosystem. The decomposition of dead plant and animal matter is a part of this process. Which of the following organisms would most likely be responsible for decomposing the dead plant and animal matter in the lake? A) Bacteria. B) Clams. C) Grasses. D) Snails. Show Answer Correct Answer: A) Bacteria. ← 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