Organismal 1. If three organisms are classified in the same phylum, then they mu

Question

Organismal 1. If three organisms are classified in the same phylum, then they must also be in the same A) species B) order C) genus D) kingdom E) family hich of the following taxonomic groups includes at least one unicellular species? A) Archaea B) Plantae C) Protista D) Fungi E) MORE THAN ONE OF THE ABOVE INCLUDES SOME UNICELLULAR SPECIES 3. In modern evolutionary theory, chloroplasts probably descended from: A) Free-living cyanobacteria B) Red algae C) Mitochondria D) Aerobic prokaryotes E) Eukaryotic cells 4. Imagine a species of bird in which females prefer to mate with brightly colored males However, males with bright backs are more often preyed upon by hawks. Assuming that a wide variety of genetic variation exists in the species, which do you think is the most lkely evolutionary outcome? A) Males will be selected to be brightly colored. B) Females will be selected to choose drab males. C) Males will be selected to have bright chests and dull backs. D) Females will not mate. E) The species will go extinct because the hawks catch all the males

Explanation / Answer

1. Option D is correct. Kingdom comes above the phylum in taxonomic rank while rest all comes after the phylum. Thus, if three organisms have same phylum they must have same kingdom.

2. Option E is correct. Here all the group includes unicellular species. Archaea are unicellular, there are some plant like euglena are unicellular, protists are unicellular, some fungi like yeasts are unicellular.

3. Option A is correct. Chloroplast has descendend from free living cyanobacteria (blue green algae) by endosymbiosis (engulfing cyanobacteria by other cells)

4. Option C is the correct. Male will develop a bright chest to attract females and dull back to avoid predation by hawks.

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