Unit 3: Biodiversity and conservation - Practice Quiz

1 What does biodiversity mean?

2 Which of the following is a level of biological diversity?

3 Genetic diversity refers to differences in genes among members of the same ____.

4 What does species diversity describe?

5 Which example best represents ecosystem diversity?

6 Why is biodiversity important for ecosystems?

7 Which of the following is an ecosystem service?

8 The ecological value of biodiversity is mainly related to its role in ____.

9 Which is an example of the economic value of biodiversity?

10 The social value of biodiversity is often connected with its importance in ____.

11 The beauty of forests, flowers, and wildlife represents the ____ value of biodiversity.

12 Biodiversity has informational value because organisms can provide knowledge for ____.

13 A biodiversity hotspot is an area that has many unique species and faces ____.

14 What is habitat loss?

15 Poaching means ____.

16 A biological invasion occurs when a non-native species ____.

17 Which situation is an example of human-wildlife conflict?

18 A species is called extinct when ____.

19 An endangered species is one that has a ____ risk of extinction.

20 What does in-situ conservation mean?

21 A forest contains many species, several genetic varieties within each species, and different habitat types. Which concept best describes this overall variation?

22 A conservation plan protects distinct rice varieties, wild rice species, and rice-growing wetland habitats. Which levels of diversity are being addressed?

23 Why is maintaining several traditional crop varieties useful when climate conditions become unpredictable?

24 Two grasslands each contain 10 species. In Grassland A, one species dominates, while in Grassland B, individuals are distributed more evenly. Which statement is most accurate?

25 A state protects mangroves, grasslands, alpine meadows, and freshwater lakes. What aspect of biodiversity does this most directly conserve?

26 A wetland reduces flooding, filters pollutants, and provides fish for nearby communities. These benefits are best classified as:

27 A wild plant is studied and developed into a commercially useful medicine. Which value of biodiversity is most directly demonstrated?

28 The decline of a pollinator causes reduced seed production in several plant species. This example shows biodiversity's:

29 Scientists examine the navigation of migratory birds to design improved aircraft guidance systems. This illustrates the:

30 Which combination best identifies a biodiversity hotspot?

31 A highway divides a continuous forest into isolated patches, reducing animal movement and breeding. This process is called:

32 A population of a large mammal declines because individuals are illegally killed for body parts. Which threat is primarily responsible?

33 An introduced plant spreads rapidly, displaces native plants, and changes soil conditions. Why is it considered an invasive species?

34 After natural prey declines, elephants enter farms and damage crops. Which measure would address the underlying conflict most effectively?

35 A species has not been found despite repeated surveys across its former range, and no individuals remain anywhere. How should it be classified?

36 A species has a very small and declining population because of habitat destruction and illegal hunting. Which category best describes its conservation status?

37 A conservation program prioritizes a species that is evolutionarily unique and also highly threatened. Which category supports this priority?

38 Protecting a wild orchid within the forest where it evolved allows the species to interact with its natural pollinators. This is an example of:

39 A seed bank stores seeds of a threatened crop variety under controlled conditions away from its natural habitat. This is:

40 India is considered a megadiverse nation mainly because it has:

41 A landscape contains two genetically distinct populations of the same species, five species, and three ecosystem types. Which interpretation best reflects the definition of biodiversity?

42 Two forest patches contain the same number of species, but their species identities differ completely. Which statement best distinguishes their diversity patterns?

43 A disease affects one crop variety severely, while a genetically diverse collection of varieties shows varying resistance. Which conservation inference is most appropriate?

44 Community A has 10 species with equal abundances, while Community B has 10 species but one species comprises 90% of individuals. Which conclusion is most defensible?

45 A conservation plan protects a mangrove, coral reef, seagrass meadow, and adjacent estuary, even though some species occur in several of them. What principal dimension is being represented?

46 A wetland reduces flood peaks, filters nutrients, supports fish nurseries, and provides recreation. Which classification is correct?

47 Removing a predator causes herbivore numbers to rise, vegetation to decline, and stream temperature to increase. Which ecological value of the predator is demonstrated?

48 A wild plant has no current commercial use, but screening reveals compounds that may yield future medicines. Which economic value is most directly involved?

49 Why can conserving an apparently obscure species be scientifically important even without immediate economic use?

50 A region qualifies as a biodiversity hotspot only when it combines substantial endemism with which additional condition?

51 A road divides a continuous forest into isolated patches, increasing edge exposure and reducing interior habitat. Which mechanism best explains the biodiversity impact?

52 A poached population still appears numerically stable, but most removed individuals are breeding adults. Why may the conservation risk be underestimated?

53 An introduced plant initially remains localized but later expands rapidly after a disturbance removes native competitors. Which interpretation is most appropriate?

54 Crop losses rise after a wildlife corridor is blocked, forcing animals through farms. Which intervention addresses the underlying cause most directly?

55 Which statement correctly distinguishes conservation categories based on population risk?

56 A species has not been observed for decades despite intensive surveys across all plausible habitats, and no captive individuals remain. Which classification is most justified?

57 Which species would receive the strongest EDGE-style conservation priority?

58 Why is conserving a threatened tree within its natural forest often preferable to preserving only seeds in a gene bank?

59 A critically threatened plant produces recalcitrant seeds that cannot tolerate drying or conventional cold storage. Which ex-situ strategy is most suitable?

60 A conservation program compares the Himalaya, Western Ghats, and Andaman and Nicobar Islands. What is the main biogeographic significance of this comparison?