Question

which statement does not support the endosymbiotic theory?
mitochondria and chloroplasts reproduce independently from the cell.
mitochondria and chloroplasts contain their own ribosomes.
mitochondria and chloroplasts have dna that resembles bacterial dna.
mitochondria and chloroplasts are much larger than prokaryotic cells.

Explanation:

The endosymbiotic theory proposes that mitochondria and chloroplasts were once free - living prokaryotes. Prokaryotic cells are generally small. If mitochondria and chloroplasts were much larger than prokaryotic cells, it would go against the idea that they were once prokaryotes (as they would have to be smaller or similar in size to fit the theory). The other options (independent reproduction, having their own ribosomes, DNA similar to bacterial DNA) support the endosymbiotic theory as these are characteristics that would be expected if mitochondria and chloroplasts were once independent prokaryotes.

Answer:

Mitochondria and chloroplasts are much larger than prokaryotic cells.