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A recent study examined the daytime and nighttime activity patterns o

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A recent study examined the daytime and nighttime activity patterns o  [#permalink]

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New post 16 Aug 2018, 04:11
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A recent study examined the daytime and nighttime activity patterns of two populations o f tree-dwelling lemurs-the first living in a rain forest, where tree canopy cover is consistent year-round, and the second living in a deciduous forest, where many trees lose their leaves during the winter months. Both groups of lemurs were found to be more nocturnal during winter months than they were the rest of the year. However, the winter increase in nocturnal activity was significantly more pronounced for the population living in the deciduous forest than it was for the population living in the rain forest.

Which one of the following, if true, most helps to explain the difference between the two lemur populations with respect to winter activity patterns?


A. For both lemur populations, the primary competitors for food resources are species active during daylight.

B. The primary predators for both lemur populations are high-flying birds that rely on their eyesight to hunt prey during daylight.

C. In both habitats, species of predatory snakes active during daylight are most active during winter months.

D. The lemur population in the rain forest is twice the size of the population in the deciduous forest.

E. The lemur population in the rain forest eats both plants and insects whereas the population in the deciduous forest eats only plants.

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Re: A recent study examined the daytime and nighttime activity patterns o  [#permalink]

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New post 18 Aug 2018, 10:10
OPTION B says activity of lemurs from decidious forests will be more because the bird predators will be watching over from the sky during the day, and predators can do so since there is no bush canopy over the place where lemurs from decidious forests can hide underneath and therefore their movement will be high during the night as they get a chance to be free from worries of being hunted by the bird predator. OFcourse, this is not the case for the other of lemurs in rainforests.
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A recent study examined the daytime and nighttime activity patterns o  [#permalink]

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New post 18 Aug 2018, 12:30
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AshutoshB wrote:
A recent study examined the daytime and nighttime activity patterns of two populations o f tree-dwelling lemurs-the first living in a rain forest, where tree canopy cover is consistent year-round, and the second living in a deciduous forest, where many trees lose their leaves during the winter months. Both groups of lemurs were found to be more nocturnal during winter months than they were the rest of the year. However, the winter increase in nocturnal activity was significantly more pronounced for the population living in the deciduous forest than it was for the population living in the rain forest.

Which one of the following, if true, most helps to explain the difference between the two lemur populations with respect to winter activity patterns?


A. For both lemur populations, the primary competitors for food resources are species active during daylight.

B. The primary predators for both lemur populations are high-flying birds that rely on their eyesight to hunt prey during daylight.

C. In both habitats, species of predatory snakes active during daylight are most active during winter months.

D. The lemur population in the rain forest is twice the size of the population in the deciduous forest.

E. The lemur population in the rain forest eats both plants and insects whereas the population in the deciduous forest eats only plants.

LSAT




B it is !!

primary predators of both the species are High flying birds.
Now -tree canopy cover is consistent year-round for those living in the rain forest !!
which means the high flying birds will have no significant impact at day time , and these lemurs can roam freely in day and in night .

Now those living in deciduous forest , where many trees lose their leaves during the winter months
will easily fall prey to the high flying birds in day time.
to compensate for this whether for finding food or mate , the nocturnal activity of these animals will increase , as the looming danger of the high flying birds ,which rely on their sight will not be present at night.
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Re: A recent study examined the daytime and nighttime activity patterns o  [#permalink]

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New post 26 Apr 2019, 00:40
egmat can you explain the answer Choice? How does daytime activity of high flying birds affect the nocturnal activity?

We know nothing about what these birds do during night time.

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Re: A recent study examined the daytime and nighttime activity patterns o   [#permalink] 26 Apr 2019, 00:40
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