#Question id: 10622
#Section 2: Evolution
For a species having logistic growth, if K = 4000 and r = 0.25, the maximum growth rate will be
#Question id: 3431
#Section 2: Evolution
In the territorial behavior of the stickleback fish, the red belly of one male elicits attack from another male by functioning as
#Question id: 4577
#Section 2: Evolution
Which of these is a statement that Darwin would have rejected?
#Question id: 10715
#Section 1: Ecology
Following table shows the presence (+) or absence (-) of five species in three communities (A, B, C):
Based on the above, which of the following is the correct order of diversity strength communities?
#Question id: 4637
#Section 2: Evolution
A biologist studied a population of squirrels for 15 years. During that time, the population was never fewer than 30 squirrels and never more than 45. Her data showed that over half of the squirrels born did not survive to reproduce, because of competition for food and predation. In a single generation, 90% of the squirrels that were born lived to reproduce, and the population increased to 80. Which inference(s) about this population might be true?
A) The amount of available food may have increased.
B) The number of predators may have decreased.
C) The squirrels of subsequent generations should show greater levels of genetic variation than previous generations, because squirrels that would not have survived in the past will now survive.
Choose correct combination,