Communication Knowledge-Based Practice

Questions

1. 1.

   Which evolutionary process describes the modification and exaggeration of an existing physiological reaction or preparatory movement into a clear, stereotyped signal used in animal communication?

   • A) Social facilitation
   • B) Sensory exploitation
   • C) Ritualization
   • D) Character displacement
2. 2.

   In vervet monkeys (Chlorocebus pygerythrus), individuals produce acoustically distinct alarm calls in response to different predators, each eliciting a specific, adaptive escape strategy from listeners. Which communication concept is best illustrated by this behavior?

   • A) Referential communication
   • B) Interspecific eavesdropping
   • C) Runaway sexual selection
   • D) Social facilitation
3. 3.

   According to the handicap principle in animal communication, why are costly signals, such as the elaborate courtship displays of male birds, evolutionarily reliable indicators of individual quality?

   • A) They minimize the risk of predation by confusing potential predators during courtship encounters.
   • B) They impose significant fitness or survival costs that lower-quality individuals cannot afford to bear.
   • C) They require negligible metabolic expenditure, allowing all males to express identical displays.
   • D) They represent learned cultural behaviors that dishonest signalers can readily mimic without physiological limits.
4. 4.

   Which of the following characteristics represents a primary advantage of chemical signals, such as pheromones, compared to visual communication signals in animals?

   • A) They can persist in the environment and transmit information over time without requiring the sender to remain present.
   • B) They travel instantaneously across long distances regardless of wind direction or air currents.
   • C) They can be rapidly turned on and off to convey immediate, fast-changing behavioral adjustments.
   • D) They require an unobstructed direct line of sight between the sender and receiver to be effectively detected.
5. 5.

   Which of the following components of the honeybee (Apis mellifera) waggle dance directly communicates the direction of a distant food source relative to the sun?

   • A) The total duration of the acoustic buzzing emitted during each run
   • B) The frequency at which the entire figure-eight dance cycle is repeated
   • C) The lateral amplitude of the abdominal waggling motions on the comb
   • D) The angle of the straight waggle run relative to vertical gravity on the comb

Answers and step-by-step solutions appear after you finish the test.