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TLS Online TPP Program

#Question id: 11406

Which of the following is true for a critically endangered species?

#Section 5: Applied Ecology & Evolution
  1. Reduction in population size is greater than 90%; estimated extinction risk at least 80% in 10 years; area of occupancy less than 10 km^2 generations
  2. Reduction in population size is greater than 90%; estimated extinction risk at least 50% in 10 years; area of occupancy less than 100 km^2 generations
  3. Reduction in population size is greater than 90%; estimated extinction risk at least 50% in 10 years; extent of occurrence less than 10 km^2 generations
  4. Reduction in population size is greater than 90%; estimated extinction risk at least 50% in 10 years; area of occupancy less than 10 km^2 g 
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TLS Online TPP Program

#Question id: 8931

#Section 2: Evolution

A researcher is trying to construct a molecular-based phylogeny of the entire animal kingdom. Assuming that none of the following genes is absolutely conserved, which of the following would be the best choice on which to base the phylogeny?
TLS Online TPP Program

#Question id: 8935

#Section 2: Evolution

What may have occurred to prevent species that are of the same grade from also belonging to the same clade?
TLS Online TPP Program

#Question id: 11401

#Section 2: Evolution

In a hypothetical situation, a bacterium lives on the surface of a leaf, where it obtains nutrition from the leafʹs nonliving, waxy covering, while inhibiting the growth of

other microbes that are plant pathogens. If this bacterium gains access to the inside of a leaf, it causes a fatal disease in the plant. Once the plant dies, the bacterium

and its offspring decompose the plant. What is the correct sequence of ecological roles played by the bacterium in the situation described here? Use only those that

apply.

1.  nutrient recycler          2.  mutualist            3.  commensal              4.  parasite          5.  primary producer
TLS Online TPP Program

#Question id: 11402

#Section 2: Evolution

How can prokaryotes be considered to be more successful on Earth than humans?
TLS Online TPP Program

#Question id: 11499

#Section 2: Evolution

Biologists have long been aware that the defunct kingdom Protista is paraphyletic. Which of these statements is both true and consistent with this conclusion?
TLS Online TPP Program

#Question id: 11500

#Section 2: Evolution

The strongest evidence for the endosymbiotic origin of eukaryotic organelles is the similarity between extant prokaryotes and which of the following?