Certain Members of the Superkingdoms Rhizaria and Excavata Have Chloroplasts

question 26

Multiple Choice

Certain members of the superkingdoms Rhizaria and Excavata have chloroplasts containing the same photosynthetic pigments. After nuclear genes were sequenced and compared, which of the following was determined?

• A)There are multiple evolutionary origins for chlorophylls a and b.
• B)Rhizaria and Excavata lineages are the result of independent endosymbiotic events.
• C)Rhizaria and Excavata share a common ancestor and the Stramenopiles and Alveolates lost their endosymbiont.
• D)"Algal" photosynthesis is different from that found in Rhizaria or Excavates.

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