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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: 12343

#Section 1: Ecology

Hybrids between some related species of plants are sterile because the parent plants had different chromosome numbers. Occasionally the chromosome number of such a hybrid  plant doubles spontaneously. Which of the following best describes the descendants of those plants with the double chromosome number?
TLS Online TPP Program

#Question id: 12342

#Section 1: Ecology

Which of the following is a biological attribute that would most likely allow a species to become cosmopolitan in distribution?
TLS Online TPP Program

#Question id: 12339

#Section 1: Ecology

If a species is a keystone predator, then its removal from a community should
TLS Online TPP Program

#Question id: 12338

#Section 1: Ecology

Ecology as a discipline directly deals with all of the following levels of biological organization except
TLS Online TPP Program

#Question id: 12337

#Section 1: Ecology

Which of the following levels of organization is arranged in the correct sequence from most to least inclusive? 
TLS Online TPP Program

#Question id: 12336

#Section 1: Ecology

Which of the following statements about ecology is incorrect?