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TLS Online TPP Program

#Question id: 12340

Keystone species are thought to have profound effects on the structure and composition of ecological communities because they

#Section 1: Ecology
  1. Tend to reduce diversity by eliminating food resources for other species
  2. Provide the foundation for food webs
  3. Are more abundant than most other species in their communities
  4. Can prevent superior competitors from driving inferior competitors to local extinction
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TLS Online TPP Program

#Question id: 10635

#Section 1: Ecology

Three important biological parameters – generation time, per capita growth rate (r) and clutch size are a function of the organism‟s body size. Which of the curves (a) or (b) represents the correct relation of each of the parameters to body size?
TLS Online TPP Program

#Question id: 8926

#Section 2: Evolution

Sponges and cnidarians are among the fossilized animals found in both the Ediacara Hills and the Burgess Shale from the Rocky Mountains of British Colombia. This observation requires that
TLS Online TPP Program

#Question id: 12564

#Section 5: Applied Ecology & Evolution

A prime factor promoting the adaptive radiation of Darwin's finches on the Galapagos Islands was the
TLS Online TPP Program

#Question id: 16752

#Section 5: Applied Ecology & Evolution

The property of a test to identify the proportion of truly ill persons in a population who are identified as ill by a screening test
TLS Online TPP Program

#Question id: 9211

#Section 5: Applied Ecology & Evolution

Of the following ecosystem types, which have been impacted the most by humans?