How is a plant from the Plant Kingdom different from other autotrophs?
The chloroplasts of plants were originally cyanobacteria (blue-green algae) that got incorporated into the cytoplasm of the plant cell. The chloroplasts of most other photosynthesizing eukaryotes, such as chromalveolates (including kelp, diatoms, and dinoflagellates), were originally red algae that got incorporated into the cytoplasm.
There are 2 types of autotrophs photoautotrophs – Plants (and some photosynthetic bacteria) chemoautotrotphs – many varieties of archea and bacteria So except for some photosynthetic bacteria (also known as blue green algae) plants are different because they make their energy from photosynthesis, while the others use chemosynthesis. However, I think the most correct answer is that plants are multicellular, while all other autotrophs are single celled.
