Question

The endosymbiotic theory provides an explanation for the origin of chloroplasts. Which trait of chloroplasts supports this explanation?

Answer 1

The endosymbiotic theory, or the hypothesis of endosymbiosis, is the hypothesis that the chloroplasts and mitochondria of eukaryotic cells arise from the incorporation (endocytosis) by some archaea of bacteria with which they have maintained an endosymbiotic relationship.

Answer 2

Answer:

Endosymbiotic theory says that the eukaryotic cells are evolved from the prokaryotic cells when a larger prokaryotic cell engulfed the smaller prokaryotic cell and both the cell lived in symbiotic relationship with each other for generations and give rise to eukaryotic cell.

Chloroplast and mitochondria are considered to be prokaryotic origin. Chloroplast is present in plant cells which shares some traits with prokaryotic cell like both chloroplast and prokaryotic cell is bound by double membrane.

Chloroplast contains its own DNA which resembles the DNA of prokaryotes because both have single circular DNA which are small in size. Chloroplast contains 70S ribosomes which is similar to prokaryotic ribosomes.