A Platypus Senses Its Prey Not Only Through Touch,but Also

question 38

Multiple Choice

A platypus senses its prey not only through touch,but also by sensing electricity.Why would the prey of a platypus generate an electrical field?

• A)Muscle contractions generate an electrical current
• B)The prey use the electrical fields to attract mates
• C)Electrical currents are produced during metabolism
• D)Electrical currents are used by the prey to repel predators
• E)Some prey like fireflies emit electrical fields

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Definitions:

Posttest-Only Cohort Design

A study design in which a cohort is observed after an intervention or event, without a pretest comparison, similar to posttest-only control but typically observational.

Pretreatment-Posttreatment Cohort Design

A study design where a cohort is observed over time, with measurements taken both before and after an intervention to assess its impact.

Reversed-Treatment Pretest-Posttest Cohort Design

An experimental design where the order of treatment conditions is reversed for different cohorts, allowing assessment of treatment effects over time.

Time Series

A time series is a sequence of data points, typically measurements taken at successive times spaced at uniform time intervals, used to analyze trends, patterns, and predictions in data over time.