TLS Online TPP Program

#Question id: 29090


The figure above shows the distribution of 10 plant species that grow along a regular environmental gradient, such as depth of the water table in a river valley. All other environmental factors are similar. This figure demonstrates that

#Unit 10. Ecological Principles
  1. Species richness increases along the gradient from A to E
  2. Species richness decreases along the gradient from A to E
  3. Discrete communities are formed at sites D and E
  4. Discrete communities are formed at sites A, C, and D
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TLS Online TPP Program

#Question id: 4700

#Unit 11. Evolution and Behavior

Which of the following is not an observation or inference on which natural selection is based?

TLS Online TPP Program

#Question id: 4701

#Unit 11. Evolution and Behavior

Charles Darwin discussed all of the following EXCEPT:

TLS Online TPP Program

#Question id: 4702

#Unit 11. Evolution and Behavior

Which of the following is correct match?

TLS Online TPP Program

#Question id: 4703

#Unit 11. Evolution and Behavior

Within a few weeks of treatment with the drug 3TC, a patientʹs HIV population consists entirely of 3TC-resistant viruses. How can this result best be explained?

TLS Online TPP Program

#Question id: 4704

#Unit 11. Evolution and Behavior

About thirteen different species of finches inhabit the Galápagos Islands today, all descendants of a common ancestor from the South American mainland that arrived a few million years ago. Genetically, there are four distinct lineages, but the thirteen species are currently classified among three genera. The first lineage to diverge from the ancestral lineage was the warbler finch (genus Certhidea). Next to diverge was the vegetarian finch (genus Camarhynchus), followed by five tree finch species (also in genus Camarhynchus) and six ground finch species (genus Geospiza). If the six ground finch species have evolved most recently, then which of these is the most logical prediction?

TLS Online TPP Program

#Question id: 4705

#Unit 11. Evolution and Behavior

Darwin and Wallace's theory of evolution by natural selection was revolutionary because it ________.