Chapter 43

Genes affect the behavior of individuals by________. a. influencing the development of nervous systems b. affecting the kinds of hormones in individuals c. determining which stimuli can be detected d. all of the above

Stevan Arnold offered slug meat to newborn garter snakes from different populations to test his hypothesis that the snakes' response to slugs ________. a. was shaped by indirect selection b. is an instinctive behavior c. is based on pheromones d. is an epigenetic effect

An animal that navigates by the stars needs________. a. an ability to sense Earth's magnetic field b. pheromone receptors c. an internal clock d. an acute sense of hearing

The honeybee dance language transmits information about distance to food by way of________ signals. a. tactile b. chemical c. acoustical d. visual

$\mathrm{A} ________is a chemical that conveys information between individuals of the same species. a. pheromone b. neurotransmitter c. hormone d. all of the above

In most________, males and females cooperate in care of the young. a. mammals b. birds c. insects d. all of the above

Generally, living in a social group costs the individual in terms of ________. a. competition for food, other resources b. vulnerability to contagious diseases c. competition for mates d. all of the above

Social behavior has evolved because________. a. social animals are more advanced than solitary ones b. under some conditions, the costs of social life to individuals are offset by benefits to the species c. under some conditions, the benefits of social life to an individual offset the costs to that individual d. under most conditions, social life has no costs to an individual

Eusocial insects ________. a. live in extended family groups b. include termites, honeybees, and ants c. have a reproductive division of labor d. all of the above

Helping other individuals at a reproductive cost to oneself can be adaptive if those helped are ________. a. members of another species b. competitors for mates c. close relatives d. counterfeit signalers

A honeybee worker is a ________. a. fertile female b. sterile female c. fertile male d. sterile male

A ________ is a change in the rate of random movement in response to a specific stimulus. a. epigenetic trait b. taxis c. kinesis d. migration

With________ , the consequences of a voluntary behavior cause an animal to repeat or avoid that behavior. a. classical conditioning b. operant conditioning c. imprinting d. instinct

With behavioral plasticity, behavior varies depending on ________. a. the time of day b. an individual's age c. environmental factors d. an individual's genotype

Match the terms with their most suitable description. ________imprinting ________tactile display ________selfish herd ________habituation ________lek a. time-limited learning b. requires staying in touch c. communal display ground d. learning not to respond e. hiding behind others