Problem: This phylogenetic tree shows the evolutionary history of eukaryotic organisms that contain mitochondria and chloroplasts. Use the tree to determine which statements regarding the origins of these organelles are true. Select all that apply.a) All chloroplasts descended from a common ancestor. b) Only species in Plantae have chloroplasts. c) All mitochondria descended from a common ancestor. d) The acquisition of mitochondria occurred after the acquisition of chloroplasts.

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FREE Expert Solution

a) All chloroplasts descended from a common ancestor. → TRUE

Chloroplasts are derived from a cyanobacterium that integrated into a cell ancestor with a mitochondrion.


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Problem Details

This phylogenetic tree shows the evolutionary history of eukaryotic organisms that contain mitochondria and chloroplasts. Use the tree to determine which statements regarding the origins of these organelles are true. Select all that apply.


a) All chloroplasts descended from a common ancestor. 

b) Only species in Plantae have chloroplasts. 

c) All mitochondria descended from a common ancestor. 

d) The acquisition of mitochondria occurred after the acquisition of chloroplasts.

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Based on our data, we think this problem is relevant for Professor Lee's class at TAMU.