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  • A species whose life history strategies allow for high intrinsic rates of increase (r-strategist) will also exhibit the following except  <div class='q

A species whose life history strategies allow for high intrinsic rates of increase (r-strategist) will also exhibit the following except

 

Option: 1

High tolerance for both environmental instability and low-quality resources.


Option: 2

Short period of exponential population growth (r).


Option: 3

Reproductive strategy that involves random mating, semelparity and little or no parental investment. 


Option: 4

Survivorship that shows density-dependent mortality, typically exhibiting Type 1 or 2 survivorship curves


Answers (1)

best_answer

The statement that does not apply to a species with high intrinsic rates of increase (r-strategist) is:

d. survivorship that shows density-dependent mortality, typically exhibiting Type 1 or 2 survivorship curves.

A species with high intrinsic rates of increase, also known as r-strategists, typically exhibit characteristics that promote rapid population growth. These characteristics include:

a. High tolerance for both environmental instability and low-quality resources: r-strategists are adaptable to varying environmental conditions and can survive and reproduce in unstable or resource-limited environments.

b. Short period of exponential population growth (r): r-strategists have a rapid growth rate, resulting in a short time span for exponential population growth.

c. Reproductive strategy that involves random mating, semelparity, and little or no parental investment: r-strategists prioritise early reproduction, produce large numbers of offspring, and exhibit limited parental care.

However, the survivorship pattern of r-strategists typically does not show density-dependent mortality, as mentioned in option d. Instead, r-strategists often exhibit Type 3 survivorship curves, where there is high mortality early in life and a rapid decline in population size.

Therefore, the correct statement is:

d. Survivorship that shows density-dependent mortality, typically exhibiting Type 1 or 2 survivorship curves.

Hence, the correct answer is option 4.

Posted by

Gautam harsolia

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