Water Fleas,Daphnia Magna,can Switch Between Asexual and Sexual Reproduction Cycles

question 24

Multiple Choice

Water fleas,Daphnia magna,can switch between asexual and sexual reproduction cycles.Which of the following observations support the hypothesis that sex is favored in unpredictable environments?

• A)The introduction of predators triggers sexual reproduction.
• B)D. magna reproduces asexually every other generation in a variety of habitats.
• C)D. magna reproduces sexually when its aquatic habitat dries up.
• D)Asexual D. magna strains outcompete introduced competitors.
• E)A and C

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Definitions:

Modelling

A method used in cognitive behavior therapy and social learning theory where individuals learn through observing and imitating others.

Cumulative Recorder

A device used in behavioral psychology to graphically record responses and visualize the rate of behavior over time.

Upward Slope

Represents an increase or positive change in a graph when one variable rises as another variable increases.

Downward Slope

A decrease or decline in a particular trend, measurement, or value over a period of time.