TLS Online TPP Program
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TLS Online TPP Program
#Question id: 12237
#Unit 10. Ecological Principles
Which of the following occurred first during the separation of the elements of Pangaea through continental drift?
TLS Online TPP Program
#Question id: 12236
#Unit 10. Ecological Principles
A plant species arrives at an island for the first time, where it is exposed to a new set of pollinators. Over the course of 20 generations, the characteristics of its flowers change. The figures above show the frequency distribution of petal length in the original colonizing population (Figure 1) and 20 generations later (Figure 2). Which of these explanations is consistent with the observed change in petal length?
TLS Online TPP Program
#Question id: 12235
#Unit 10. Ecological Principles
Which of the following are important biotic factors that can affect the structure and organization of biological communities?
TLS Online TPP Program
#Question id: 12234
#Unit 10. Ecological Principles
All of the following have been used by plants to avoid being eaten except
TLS Online TPP Program
#Question id: 12233
#Unit 10. Ecological Principles
Monarch butterflies are protected from birds and other predators but the cardiac glycosides they incorporate into their tissues are from eating milkweed when they were in their caterpillar stage of development. The wings of a different species of butterfly, the Viceroy, look nearly identical to the Monarch so predators that have learned not to eat the bad-tasting Monarch avoid Viceroys as well. This example best describes
TLS Online TPP Program
#Question id: 12232
#Unit 10. Ecological Principles
White-breasted nuthatches and Downy woodpeckers both eat insects that hide in the furrows of bark in hardwood trees. The Downy woodpecker searches for insects by hunting from the bottom of the tree trunk to the top, while the White-breasted nuthatch searches from the top of the trunk down. These hunting behaviours best illustrate which of the following ecological concepts?