Predation Knowledge-Based Download PDF

Questions

1. 1.

   According to the life-dinner principle in predator-prey coevolution, why is natural selection expected to exert stronger selective pressure on prey defenses than on predator hunting strategies?

   • A) Prey populations generally maintain significantly higher standing genetic variation than predator populations.
   • B) A failed encounter costs the prey its life, whereas a failed encounter costs the predator only a single meal.
   • C) Predators reproduce more rapidly and have shorter generation times than their prey species.
   • D) Predators rely entirely on learned behaviors rather than heritable morphological adaptations to capture prey.
2. 2.

   Which of the following anti-predator adaptations is characterized by a palatable, harmless prey species evolving to display the warning coloration of an unpalatable or toxic model species?

   • A) Batesian mimicry
   • B) Müllerian mimicry
   • C) Aposematic coloration
   • D) Cryptic coloration
3. 3.

   In an ecological community, how does a keystone predator primarily maintain high species diversity among its prey?

   • A) By selectively consuming the rarest prey species, which reduces resource competition among surviving organisms.
   • B) By preying heavily on the competitively dominant prey species, thereby preventing competitive exclusion of subordinate species.
   • C) By evenly reducing the population densities of all prey species regardless of their competitive ability.
   • D) By forming obligate mutualisms with primary producers to enhance total resource availability at the base of the food web.
4. 4.

   In classic predator-prey population dynamics, which of the following best explains why the peak in predator abundance typically lags behind the peak in prey abundance?

   • A) Predators require time to convert the energy acquired from consuming prey into increased survival, reproduction, and juvenile recruitment.
   • B) Prey individuals actively migrate away from the habitat when their numbers peak, causing a temporary delay in predator foraging success.
   • C) Predators intentionally suppress their own birth rates during periods of high prey abundance to avoid depleting their food supply.
   • D) Increased prey density triggers intense intraspecific combat among predators that initially suppresses the predator population.
5. 5.

   Which of the following statements accurately describes the ecological interaction of predation within a biological community?

   • A) It is an interaction in which both interacting species experience reduced fitness as a direct consequence of competing for limited resources.
   • B) It is a symbiotic association in which one organism feeds on the tissues of a living host over an extended period without typically killing it immediately.
   • C) It is an obligate relationship in which two distinct species provide reciprocal metabolic benefits that increase the reproductive output of both partners.
   • D) It is an interaction where one organism captures, kills, and consumes another organism, exerting strong selective pressure on prey populations.