#Question id: 10840
#Section 2: Evolution
Why are monarch butterfly’s toxic?
#Question id: 10846
#Section 2: Evolution
Many birds readily feed upon periodic cicadas when they emerge as adults. This interaction between birds and cicadas represents an example of
#Question id: 10652
#Section 1: Ecology
Which factors (limited space or overcrowding; limited food; Predators; parasite and diseased) tend to act in a density-dependent manner; Tony Sinclair (1989) many studies of density dependence in 51 populations of insects, 82 populations of large mammals, and 36 populations of small mammals and birds. Which of the following observation is most likely true?
a) Insects showed a wide variety of causes of density dependence and no one density-dependent factor was of overriding importance
b) The lesser the amount of available food, the greater the mortality of large mammals
c) Space and social interactions were more important for smaller mammals and birds, because they are more territorial
#Question id: 12102
#Section 1: Ecology
Use the following diagram of Joseph Connell's study of barnacle distribution in Scotland to answer the following two questions
Which of the following is the most logical conclusion about the distribution of the two species of barnacle, Chthamalus and Balanus?
#Question id: 10897
#Section 2: Evolution
When three species of sunfish with similar niches were all placed in the same experimental pond, each made use of resources that they did not exploit in the absence of the other species. This scenario is referred to as