Multiple Choice
Which of the following traits is characteristic of K-selected populations?
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50. Population Ecology
r/K Selection
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Which of the following statements about r & K selection is true?
A
K-selected organisms tend to exhibit iteroparity so they can better care for their offspring.
B
r-selected organisms tend to exhibit iteroparity so they can care for their offspring.
C
K-selected organisms often exhibit semelparity as they invest all their resources towards producing offspring.
D
r-selected organisms usually exhibit semelparity as they can’t continuously reproduce throughout life.
Verified step by step guidance1
Understand the concepts of r-selection and K-selection. r-selected species are those that produce many offspring with little parental investment, while K-selected species produce fewer offspring with more parental care.
Learn the difference between iteroparity and semelparity. Iteroparity refers to organisms that reproduce multiple times throughout their lives, while semelparity refers to organisms that reproduce once and then die.
Analyze the statement: 'K-selected organisms tend to exhibit iteroparity so they can better care for their offspring.' This aligns with the definition of K-selection, where organisms invest more in fewer offspring, often through repeated reproductive cycles.
Consider the statement: 'r-selected organisms tend to exhibit iteroparity so they can care for their offspring.' This is incorrect because r-selected species typically do not invest heavily in offspring care and often reproduce in large numbers with less frequent cycles.
Evaluate the statement: 'r-selected organisms usually exhibit semelparity as they can’t continuously reproduce throughout life.' This is generally incorrect as r-selected species often reproduce multiple times, but with less investment in each offspring.
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