Is endosymbiosis a kleptoplasty?
Endosymbiosis is a rare process in nature because it requires the integration of host and symbiont membranes and their common evolution12. While kleptoplasty is a general phenomenon in protists13, 14, to date, sacoglossans are the only metazoans known to maintain this type of association15. Are there any animals with chloroplasts? At least one group of…