Learning Materials
Features
Discover
Chapter 56: Problem 8
Which signal type would provide the fastest communication between bats flying in a dark forest? a. chemical signals b. acoustical signals c. visual signals d. tactile signals e. electrical signals
Over 30 million students worldwide already upgrade their learning with 91影视!
All the tools & learning materials you need for study success - in one app.
Get started for free
Although females provide parental care far more often than males in the animal kingdom as a whole, exceptions exist, especially among birds and fishes. Develop three evolutionary hypotheses to explain why male birds are so likely to involve themselves in caring for their offspring.
In comparison to males, the females of many animal species: a. compete for mates. b. choose mates that are well camouflaged in their habitats. c choose to mate with many partners. d. are always monogamous. e. choose their mates carefully.
Social behavior: a. is exhibited only by animals that live in groups with close relatives. b. cannot evolve in animals that maintain territories. c. evolved because group living provides benefits to individuals in the group. d. is never observed in insects and other invertebrate animals. can be explained only by the hypothesis of kin selection.
A stimulus that always causes an animal to behave in a highly stereotyped way is called: a. fixed action pattern. b. an instinct. c. habituation. d. a sign stimulus. e. a reinforcement.
In cichlid fishes, high levels of the hormone GnRH: a. make females more receptive to male attention. b. cause males to be sexually aggressive but not territorial. c. stimulate a male to defend its territory. d. cause males to abandon their territories. c. cause males to lose their bright colors.
What do you think about this solution?
We value your feedback to improve our textbook solutions.
Explanations 
Textbooks 
Flashcards 
91影视 AI 
Notes 
Study Plans 
Study Sets 
Find a degree 
Magazine