. SCIENTIFIC INQUIRY Scientists studying scrub jays found that“helpers” often assist mated pairs of birds by gathering food fortheir offspring.(A) Propose a hypothesis to explain what advantage theremight be for the helpers to engage in this behavior insteadof seeking their own territories and mates.(B) Explain how you would test your hypothesis. If it is correct,what results would you expect your tests to yield?

. SCIENTIFIC INQUIRY Scientists studying scrub jays found that“helpers” often assist mated pairs of birds by gathering food fortheir offspring.(A) Propose a hypothesis to explain what advantage theremight be for the helpers to engage in this behavior insteadof seeking their own territories and mates.(B) Explain how you would test your hypothesis. If it is correct,what results would you expect your tests to yield?

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter56: Ecology And The Geography Of Life

Section: Chapter Questions

Problem 16TYU: EVOLUTION LINK When a black-tailed prairie dog or other small animal dies, other prairie dogs bury...

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EVOLUTION LINK When a black-tailed prairie dog or other small animal dies, other prairie dogs bury it. Develop a hypothesis to explain how this behavior may be adaptive. How would you test this hypothesis?
Although some sharks close their eyes just before they bite,their bites are on target. Researchers have noted that sharksoften misdirect their bites at metal objects and that they canfind batteries buried under sand. This evidence suggests thatsharks keep track of their prey during the split second beforethey bite in the same way that(A) a rattlesnake finds a mouse in its burrow.(B) an insect avoids being stepped on.(C) a star-nosed mole locates its prey in tunnels.(D) a platypus locates its prey in a muddy river.
Female parasitoid wasps search for insect hosts in which to lay eggs, and they can often discriminate among individual hosts that are more or less suitable for their offspring. Behavioral ecologists have asked whether or not the wasps’ willingness to lay eggs in less suitable hosts varies with the female’s age. On the basis of life history theory, what pattern of change would you predict? Does life history theory make any other predictions about animal behavior?
Which of the following questions is most closely associated with anultimate cause of a behavior?a. How does a squid alter its color to blend in with its environment?b. How does a hummingbird’s body shape influence its ability tohover?c. How do alarm calls affect prairie dog fitness?d. Which cues do monarch butterflies use during migration?
Many species of animals make alarm calls, whichwarn others in their group that a predator isapproaching. Alarm calls also attract the attention of the predator, making it more likely thatthe individual making the call will be eaten. Whymight natural selection favor the evolution ofalarm calls in a species? How might you test thathypothesis?
Many species of animals make alarm calls, which warn others in their group that a predator is approaching. Alarm calls also attract the atten- tion of the predator, making it more likely that the individual making the call will be eaten. Why might natural selection favor the evolution of alarm calls in a species? How might you test that hypothesis?
Researchers observed that the crows only gather and drop thelargest whelks. What are some reasons crows might favor largerwhelks?
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It’s sometimes said that the reason an animal does something is that it’s “for the good of the species.” Why is this argument incorrect?
Young sea turtles head for the ocean immediately after theyhatch. This behavior is most likelya. innate.b. learned through trial and error.c. classically conditioned.d. the result of habituation.
Cuckoo bird lays eggs in the nest of crowWhich type of interaction is shown in this relation?
According to Hamilton’s rule,(A) natural selection does not favor altruistic behavior thatcauses the death of the altruist.(B) natural selection favors altruistic acts when the resultingbenefit to the recipient, corrected for relatedness, exceedsthe cost to the altruist.(C) natural selection is more likely to favor altruistic behaviorthat benefits an offspring than altruistic behavior thatbenefits a sibling.(D) the effects of kin selection are larger than the effects ofdirect natural selection on individuals.