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TLS Online TPP Program

#Question id: 11406

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

#XL - T Zoology
  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: 8721

#XL - S Microbiology

Based on cladistics, which eukaryotic kingdom is polyphyletic and, therefore, unacceptable?
TLS Online TPP Program

#Question id: 8721

#XL - T Zoology

Based on cladistics, which eukaryotic kingdom is polyphyletic and, therefore, unacceptable?
TLS Online TPP Program

#Question id: 8773

#XL - S Microbiology

Which eukaryotic kingdom includes members that are the result of endosymbioses that included an ancient aerobic bacterium and an ancient cyanobacterium?
TLS Online TPP Program

#Question id: 8773

#XL - T Zoology

Which eukaryotic kingdom includes members that are the result of endosymbioses that included an ancient aerobic bacterium and an ancient cyanobacterium?
TLS Online TPP Program

#Question id: 8775

#XL - S Microbiology

Use the following information to answer the question. Paulinella chromatophora is one of the few cercozoans that is autotrophic, carrying out aerobic photosynthesis with its two elongated "chromatophores." The chromatophores are contained within vesicles of the host cell, and each is derived from a cyanobacterium, though not the same type of cyanobacterium that gave rise to the chloroplasts of algae and plants. A crucial photosynthetic gene of the cyanobacterium that gave rise to the chromatophore is called psaE. This gene is present in the nuclear genome of the cercozoan, but is not in the genome of the chromatophore. This is evidence of ________.
TLS Online TPP Program

#Question id: 8776

#XL - S Microbiology

What kind of evidence has recently made it necessary to assign the prokaryotes to either of two different domains, rather than assigning all prokaryotes to the same kingdom?