This quiz works best with JavaScript enabled. Home > Ugc Net > Paper 1 > Environment > Convention On Biodiversity – Quiz 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Convention On Biodiversity Quiz 7 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the most impactful cause of biodiversity loss world wide? A) Overharvesting. B) Pollution. C) Habitat loss. D) Invasive species. Show Answer Correct Answer: C) Habitat loss. 2. What is the variety of ecosystems that are present in the biosphere? A) Species diversity. B) Ecosystem diversity. C) Genetic diversity. D) Biodiversity. Show Answer Correct Answer: B) Ecosystem diversity. 3. The 40% drops in the number of polar bear in the Southern Beaufort Sea is caused by A) Invasive species. B) Climate change. C) Overharvesting. D) Habitat destruction. Show Answer Correct Answer: B) Climate change. 4. What actions decrease biodiversity? A) Pollution. B) Overpopulation. C) Habitat Destruction / Loss. D) Monocrop Farming / Mining / Overfishing / Over hunting. E) All of these are correct. Show Answer Correct Answer: E) All of these are correct. 5. Southern Sea Otters are an example of a(n) A) Threatened species. B) Keystone species. C) Invasive species. D) Endangered species. Show Answer Correct Answer: B) Keystone species. 6. What global phenomenon has caused some organisms to move toward the poles or to higher altitudes? A) Habitat fragmentation. B) Pollution. C) Warming temperatures. D) Invasive species. Show Answer Correct Answer: C) Warming temperatures. 7. Choose the option that expresses the definition the best. "No natural predators, generalist, and high reproductive rate." A) Hasbitat destruction, degradation, and fragmentation. B) Invasive (nonnative species). C) Population and resource use growth. D) Greenhouse effect. E) Overexplotation. Show Answer Correct Answer: B) Invasive (nonnative species). 8. The Sikhote-Alin Mountains, and the Siberian tigers living on them, are separated from other mountain regions in which the tigers could live. The mountains are an example of a(n) A) Invasive species. B) Habitat fragment. C) Mass extinction. D) Mass extirpation. Show Answer Correct Answer: B) Habitat fragment. 9. International treaty to conserve biodiversity and ensure its resposible use and distribution A) CITES. B) Convention on Biological. C) Endangered Species Act. D) None of above. Show Answer Correct Answer: B) Convention on Biological. 10. What is an increase of biodiversity over time, after a natural or man made disturbance? A) Climax succession. B) Climax recession. C) Ecological succession. D) Ecological recession. Show Answer Correct Answer: C) Ecological succession. 11. Temperate deserts can be ..... A) Wetter than most grasslands. B) Wetter during the winter than most forests. C) Hot during the day but cold at night. D) Hotter during the winter than in the summer. E) Even hotter at night than they are during the day. Show Answer Correct Answer: C) Hot during the day but cold at night. 12. What is the main cause of today's extinctions? A) Overharvesting. B) Climate change. C) Pollution. D) Habitat destruction. Show Answer Correct Answer: D) Habitat destruction. 13. What biome contains the least amount of species biodiversity? A) Tropical Rainforest. B) Tundra. C) Ocean. D) Desert. Show Answer Correct Answer: B) Tundra. 14. The Endangered Species Act of 1973 protects registered endangered species by removing them from the "take" list which makes it unlawful to A) Shoot. B) Capture. C) Trap. D) All of the above. Show Answer Correct Answer: D) All of the above. 15. The practice of harvesting or hunting to such a degree that remaining individuals may not be able to replenish the population is called ..... A) Biomagnification. B) Natural resource. C) Edge effects. D) Overharvesting. Show Answer Correct Answer: D) Overharvesting. 16. Which is the most direct way in which biodiversity can provide a source of income? A) Ecotourism. B) Agriculture. C) Medicines. D) Research. Show Answer Correct Answer: A) Ecotourism. 17. A forest full of many kinds of trees and grasses is an example of a A) Community. B) Organism. C) Group. D) Population. Show Answer Correct Answer: A) Community. 18. Organisms that play a role in the way an ecosystem functions is called A) Endemic species. B) Native species. C) Indicator species. D) Keystone species. Show Answer Correct Answer: D) Keystone species. 19. A treaty is a(n) A) State law to protect wildlife. B) Agreement under international law. C) Trade-off with landowners. D) Biodiversity program run by zoos. Show Answer Correct Answer: B) Agreement under international law. 20. If a population grows larger than its environmental carrying capacity, then A) Death rate may rise. B) Death rate may fall significantly. C) Birth rate may rise significantly. D) Immigration rate may increase. Show Answer Correct Answer: A) Death rate may rise. 21. Biodiversity is measured by what two factors? A) Primary and secondary. B) Richness and evenness. C) Amount and type. D) Richness and type. Show Answer Correct Answer: B) Richness and evenness. 22. An ecosystem with increasing plant and animals is said to have which diversity? A) Ecosystem diversity. B) Genetics diversity. C) Species diversity. D) NONE. Show Answer Correct Answer: C) Species diversity. 23. A species that is critical to the functioning of an ecosystem is called a(n) A) Endemic species. B) Keystone species. C) Exotic species. D) Invasive species. Show Answer Correct Answer: B) Keystone species. 24. Another form of pollution that destroys underwater habitats for fish and other species. A) Acid precipitation. B) Eutrophication. C) Biological magnification. D) Fragmentation. Show Answer Correct Answer: B) Eutrophication. 25. Which of the following describes a species that will soon be gone if nothing is done? A) Extinct. B) Invasive. C) Endangered. D) Threatened. Show Answer Correct Answer: C) Endangered. 26. Which of the following terms describes the net amount of organic matter that an ecosystem or biome produces? A) Photosynthetic mass. B) Gross production. C) Net productivity. D) Net primary production. Show Answer Correct Answer: D) Net primary production. 27. A species that is not native to a particular region A) Endemic. B) Endangered. C) Extinct. D) Exotic. Show Answer Correct Answer: D) Exotic. 28. Why is biodiversity important for agriculture? A) Many organisms pollinate our crops. B) Pollinators save people time. C) Pollinators save people money. D) All statements are true. Show Answer Correct Answer: D) All statements are true. 29. If a species is only found in one place on Earth we call it a(n) ..... A) Local species. B) Lonesome species. C) Allopatric species. D) Endemic species. Show Answer Correct Answer: D) Endemic species. 30. Species diveristy is A) The diversity of genes within a species. B) Diversity among species in an ecosystem. C) Diversity of ecological niches within a given ecosystem. D) None of above. Show Answer Correct Answer: B) Diversity among species in an ecosystem. ← PreviousNext →Related QuizzesPaper 1 QuizzesUgc Net QuizzesConvention On Biodiversity Quiz 1Convention On Biodiversity Quiz 2Convention On Biodiversity Quiz 3Convention On Biodiversity Quiz 4Convention On Biodiversity Quiz 5Convention On Biodiversity Quiz 6Convention On Biodiversity Quiz 8Convention On Biodiversity Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books