If lynxes depend mainly on hares for food, the relationship between hares and lynxes is described by

As the hare population decreases, the lynx population increases

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As the hare population decreases, the lynx population stays the same

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As the hare population increases, the lynx population increases

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As the hare population increases, the lynx population stays the same

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There is no relationship between the populations of lynxes and hares.

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Solution

The correct option is C As the hare population increases, the lynx population increases
There is direction corelation between population size of predator and prey. If lynxes depend mainly on hares for food, decrease and increased in hare population would cause decrease and increase in lynx population respectively as lynes derive food from hare. Thus, the correct answer is option C.

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Q. A population of snowshoe hare rabbits lives in a particular region of the arctic tundra that experiences high winds, extremely cold temperatures, and receives very little snow. Their main predator is nocturnal and hunts by sound.
Which of the following mutations would best be classified as an adaptation in this population of snowshoe hares?

Q. A basic principle of ecology is that population size is partly a reflection of available food resources. Recent experiments suggest that the relationship is more complex than formerly thought. Specifically, the browsing of certain rodents appears to trigger chemical reactions in food plants which, in turn, affect the size of the rodent populations. Two examples of such regulation have been reported. Berger has demonstrated the power of a naturally occurring chemical called 6-MBOA to stimulate reproductive behavior in the mountain vole, a small mouse-like rodent. 6-MBOA forms in young grass in response to browsing by voles. Berger experimented by feeding oats coated with 6-MBOA to non-breeding winter populations of voles. After three weeks, she found a high incidence of pregnancy among females. Since the timing of reproduction is crucial to the short-lived vole in an environment in which the onset of vegetative growth may be considerably delayed, the phytochemical triggering of reproductive behavior represents a significant biological adaptation.
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What will happen if deer is missing in the food chain given below? $G r a s s \to D e e r \to T i g e r \to$

(a) The population of tigers increases

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