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27 Nov 2019

Species A prefers a dryer habitat but grows in a wet habitat. Why might this be?
A ) Species B outcompetes A in the dry habitat
B) Species A's fundamental niche is restricted to a wet habitat
C) Species A requires large amounts of moisture to grow
D) Species B prefers a wet habitat

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21 May 2019
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Related questions

Q5. Kangaroo rats are endemic to the deserts of theAmerican southwest. In one region, two kangaroo rat species eatonly seeds and are biologically extremely similar. The two speciesare found in adjacent habitats. Seeds are abundant in bothhabitats, but less nutritious than insects. If you were to doublethe amount of seeds across both habitats and add insects aspotential food, which of the following outcomes would most likelyresult?

Q7. If, over evolutionary time, one of the two kangaroo ratspecies from Question 5 (without a third species present) were toevolve a change in food habits such that it eats only insects.Which of the following would most likely happen

A. It would outcompete the other species because insects aremore nutritious than seeds.

B. The other species would outcompete it because seeds are moreabundant than insects

C.Both species would share both habitats because their nicheswould be different and competition would thus be eliminated.

D. One species would outcompete the other, but which speciesdoes so will be determined by random chance

Kangaroo rats are endemic to the deserts of the American southwest.In one region, two kangaroo rat species eat only seeds and arebiologically extremely similar. The two species are found inadjacent habitats. Seeds are abundant in both habitats, but lessnutritious than insects. If you were to double the amount of seedsacross both habitats and add insects as potential food, which ofthe following outcomes would most likely result?

A)One species will change its food preferences to eat insects andthe two species will coexist across both habitats.
B) Because of the abundance and diversity of food available, bothspecies will coexist across both habitats.
C) Both species will switch their diets to the more nutritiousinsects and one will exclude the other from both habitats.
D) No change will occur; the abundance and diversity of resourcesdoes not determine the ultimate outcome of competition if nichesremain the same.

1) Habitat fragmentation is a big concern to conservationbiologists. How will habitat fragmentation affect evolution bygenetic drift?

a)Habitat fragmentation will increase the effect of geneticdrift, and lead to an increase in variation.

b)Habitat fragmentation will reduce the effect of genetic drift,and lead to an increase in variation.

C)Habitat fragmentation will increase the effect of geneticdrift, and lead to an decrease in variation.

d) Habitat fragmentation will reduce the effect of geneticdrift, and lead to an decrease in variation.

e)Habitat fragmentation will have no effect on genetic drift.Genetic drift will occur whether or not a habitat has beenfragmented.

2) Which scenario would be most likely to promote the evolutionof prezygotic isolating mechanisms between two similar species in ahybrid zone?

a) Hybrid offspring are significantly larger than the parentalspecies.

b) Hybrid offspring have a courtship display identical to thatof one of the parental species

c) Hybrid offspring have low fitness relative to the parentalspecies.

d) Hybrid offspring have high fitness relative to the parentalspecies

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