Midterm II Practise Questions W2013 Key UPDATED

The gazelle can change direction very quickly while

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Unformatted text preview: sed rates of predation. Increases in rates of herbivory lead to changes in the nutritive value of plants used as food. Increases in population density lead to more infestations of parasites to host animals. All of the above are plausible explanations of population cycling. 47. Which of the two graphs below, shows a population of organisms that has a strong population cycle? A. Graph A B. Graph B 48. Most bats are nighttime hunters and they emit high- frequency and high- intensity sounds and by their returning echoes create an image about their surroundings. Under selective pressure from this prey- location system, certain moths (which are bats’ prey) have evolved simple ears that are particularly sensitive to frequencies used by bats. When they hear the bats, they drop to the ground. The bats, in turn, have...
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This test prep was uploaded on 02/20/2014 for the course BIOLOGY 1001 taught by Professor Tamarakelly during the Spring '13 term at York University.

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