Question 1

Which of the following best describes the concept of 'fitness' in evolutionary biology?

Accepted Answer

The number of surviving offspring who themselves can successfully reproduce.

Question 2

In a population of colonial black-headed gulls, mobbing behavior is observed as a defense against predators. What is the evolutionary explanation for the persistence of this behavior?

Accepted Answer

Mobbing persists because the benefit to the group outweighs the cost to individuals.

Question 3

Which hypothesis explains why animals in large groups may experience a reduced risk of predation due to the predator's inability to focus on a single prey?

Accepted Answer

Confusion effect hypothesis

Question 4

A meerkat that has just eaten takes up sentinel duty, watching for predators while others forage. What evolutionary concept best explains this behavior?

Accepted Answer

Division of labor based on individual state

Question 5

Which of the following is an example of passive defense against predators?

Accepted Answer

Camouflage

Question 6

In the Hawk-Dove game theory model, if the value of food is $$V$$ and the cost of fighting is $$C$$, what is the average payoff for a Hawk when encountering another Hawk?

Accepted Answer

$$\frac{V-C}{2}$$

Question 7

Which type of mimicry involves two or more distasteful or dangerous species resembling each other?

Accepted Answer

Müllerian mimicry

Question 8

A plover performs a broken wing display to lure a predator away from its nest. What type of anti-predator strategy is this?

Accepted Answer

Deceptive signaling

Question 9

According to optimal foraging theory, which clam size should a crow select if the search time is $$t_s$$, handling time is $$t_h$$, and energy gained is $$E$$? The crow should maximize:

Accepted Answer

$$\frac{E}{t_s + t_h}$$

Question 10

Which of the following best describes the 'selfish herd' hypothesis?

Accepted Answer

Individuals in a group attempt to reduce their predation risk by moving to the center of the group.

Question 11

Why might a gazelle engage in stotting when a predator is nearby?

Accepted Answer

To signal to the predator that it is healthy and not worth chasing.

Question 12

Which of the following is a conditional foraging strategy observed in ruddy turnstones?

Accepted Answer

Dominant individuals feed at the best sites while subordinates use less optimal sites.

Question 13

If the cost of mobbing ($$C) is $$greater than the benefit ($$B$$), what would you expect to happen to mobbing behavior in a population?

Accepted Answer

Mobbing behavior would decrease or disappear.

Question 14

Which mathematical tool do biologists use to predict animal behavior in situations involving competition and cooperation?

Accepted Answer

Evolutionary game theory

Question 15

A harmless king snake resembles a venomous coral snake. What type of mimicry is this?

Accepted Answer

Batesian mimicry

Question 16

Which of the following is NOT a benefit of group living in animals?

Accepted Answer

Guaranteed access to the best food resources for all individuals

Question 17

If a solitary animal spends $$P$$ units of energy searching for food and $$B$$ units of energy handling food, what is the total energy expenditure for one foraging event?

Accepted Answer

$$P+B$$

Question 18

Which of the following is a real-world example of aposematic coloration?

Accepted Answer

A poison dart frog displaying bright colors

Question 19

In the context of predator avoidance, what is the main function of alarm calls in social animals?

Accepted Answer

To warn conspecifics of the presence and type of predator

Question 20

Which scenario best illustrates the dilution effect hypothesis?

Accepted Answer

A large school of fish swimming together, reducing the chance of any one fish being eaten.

Avoiding Predators and Finding Food: Behavioral Strategies in Animals

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