Micro Organisms
Which of the following best represents the hierarchy of levels of biological classification?

Class, order, kingdom, phylum, family, genus, species
Kingdom, phylum, class, order, family, genus, species
Kingdom, phylum, family, class, order, genus, species
Phylum, kingdom, class, order, genus, species, family

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Micro Organisms
Genetic and biochemical similarities between contemporary cyanobacteria and eukaryotic chloroplasts are accepted to mean that

cyanobacteria arose from chloroplasts which escaped from plant cells
eukaryotes evolved from bacteria
oxygenic photosynthesis first evolved in eukaryotes
eukaryotes evolved from archaea

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