#Question id: 10671
#Section 2: Evolution
The principle of competitive exclusion states that
#Question id: 4572
#Section 2: Evolution
Of the following anatomical structures, which is homologous to the wing of a bird?
#Question id: 10655
#Section 1: Ecology
Which of the following statements about the evolution of life histories is correct?
A) Unstable environments with unlimited resources favor r-selected populations.
B) K-selected populations are most often found in environments where density-independent factors are important regulators of population size.
C) Most populations have both r- and K-selected characteristics that vary under different environmental conditions.
D) The reproductive efforts of r-selected populations are directed at producing just a few offspring with good competitive abilities.
#Question id: 10845
#Section 2: Evolution
Pseudomyrmex ants live exclusively in the swollen thorns of acacia trees. In return for food and shelter provided by the trees, the ants aggressively defend the tree from leaf-eating insects. This interaction between ants and acacias represents an example of
#Question id: 12577
#Section 5: Applied Ecology & Evolution