Which of the following is one piece of evidence for the endosymbiotic origin of eukaryotic organelles? a. mitochondria have flagella b. mitochondria have single membranes c. chloroplasts reproduce by binary fission d. existing eukaryote cells have bacterial endosymbionts

Both of these. complaint your teacher for giving you a multiple choice question that has two correct responses. 
C. chloroplasts reproduce by binary fission 
D. existing eukaryote cells have bacterial endosymbionts

Existing eukaryote cells have bacterial endosymbionts is one piece of evidence for the endosymbiotic origin of eukaryotic organelles.

 

Symbiogenesis, or endosymbiotic theory, is an evolutionary theory that explains the origin of eukaryotic cells from prokaryotes. It states that several key organelles of eukaryotes originated as a symbiosis between separate single-celled organisms.

 

The correct answer between all the choices given is the last choice or letter D. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

The soviet union beat the us to the first successful launch, with the october 4, 1957, orbiting of sputnik 1, and later beat the us to have the first human in earth orbit, yuri gagarin, on april 12, 1961. the "race" peaked with the july 20, 1969, us landing of the first humans on the moon with apollo 11

A