All of the following are possible origins of cell organelles in eukaryotes except: invagination of the plasma membrane to form endoplasmic reticulum. incorporation of engulfed heterotrophic bacteria to form mitochondria. incorporation of engulfed autotrophic cyanobacteria to form chloroplasts. a symbiotic relationship between a host cell and a prokaryote that was taken up but not destroyed. all of the answer choices are possible explanations.

The correct answer is "All of the answer choices are possible explanations".

Explanation:

The evolutionary origin of cell organelles propose that a some point in history, a symbiotic relationship between prokaryotic cells and the ancestor of eukaryotes occurred. Basically, in this symbiotic relationship, the ancestor of the eukaryotic host cell took up a prokaryote that was not destroyed. There are different theories regarding the origin of the different organelles, including:

- Invagination of the plasma membrane to form endoplasmic reticulum. The endoplasmic reticulum has a tubular networks of membranes that were invaginated.

- Incorporation of engulfed heterotrophic bacteria to form mitochondria. Mitochondria allows for cell's respiration, it is likely that this organelle originated from engulfed heterotrophic bacteria.

- Incorporation of engulfed autotrophic cyanobacteria to form chloroplasts. Chloroplasts allows for cell's photosynthesis, it is likely that this organelle originated from engulfed autotrophic cyanobacteria.

preservation because he preserves part of the land and preserves means save

explanation: