35. An organism\'s \"realized niche\" is a. the actual role it has in an ecosyst

Question

35. An organism's "realized niche" is a. the actual role it has in an ecosystem, b. the role it is capable of fil c. the ideal habitat that supports the largest po d the trophic level it occupies in a e. whether it is predator or including all interactions with ling without competition, given its other organisms actual resource food web. 36. A of fores lumber company proposes to clear-cut a large area of forest, but it plans to leave small pasches t to provide habitat for forest animals. The weakness of this method of conservation is that patches can support populations of species that require large areas because thery wilh a. small b. small patches can harbor small populations of species that are now protected from large c. due to edge effects, small patches have higher temperatures, stronger winds, and lower d. species that live in the clear-cut areas will avoid the patches and not compete with or prey on freely move between patches. predators humidity levels than larger forest tracts the species living there. 37. Natural preserves maintain biodiversity by a. permitting easy collecting and cataloguing of new species b. serving as a nursery to repopulate adjacent unprotected areas. c. encouraging ecotourism d. promoting interspecific hybridization e. limiting the number of souvenir shops 38. The economic value of an ecosystem a. cannot be estimated. b. depends only on the aesthetic value (visual appeal) c. is proportional to the numbet of species present d. is proportional to its market value if used for other purposes e. depends on the cost of replacing the services it provides, such as water purification in a watershed 39. One proposal for conserving endangered tiger species is to breed them in captivity and then to sell some of the tigers to pay for the breeding program. Which of the following conditions might prevent this strategy from working? a. methods for successful breeding in captivity b. a high market value of individual animals to cover cost of raising all these animals c. no way to prevent poached animals from being sold "legally d. large nature preserves with undisturbed habitat for wild populations e. the means to maintain genetic diversity of the species 40. Males of a particular species of bird defends its territory from other male birds of that species only during mating season. What is the most likely reason? a. It likes the company of other males. b. Food is not limiting during other seasons. c. It costs too much energy to defend a territory year-round. d. It learns how to attract a female by watching other males. e. It is avoiding the chore of raising the brood of chicks

Explanation / Answer

Answer:

35.An organism's realized niche is the role it is capable of filling without competition given its actual resource needs.

Hence, option (b) is correct answer.

36.

Area fragmentation creates edge effects.

Hence,option (C) is correct answer.

37.

Natural habitats maintain biodiversity by serving a nursery to repopulate adjacent unprotected area.

Hence, option (b) is correct answer.

38.

The economic value of an ecosystem depend the cost of replacing the service it provides such as water purification in watershed.

Hence, option(e) is correct.

39.

Methods for successful breeding in captivity is the condition to prevent this.

Hence,option (a) is correct.

40.

The main reason of it is that food is not limiting during other seasons.

Hence, option (B) is correct.

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