Assertion: cryptomonad's chloroplast | /r/HasAspect | double membrane
Facets:
value: from their cyanobacterial ancestor
type: OTHER
Source sentences:
text: While primary chloroplasts have a double membrane from their cyanobacterial ancestor, secondary chloroplasts have additional membranes outside of the original two, as a result of the secondary endosymbiotic event, when a nonphotosynthetic eukaryote engulfed a chloroplast-containing alga but failed to digest it—much like the cyanobacterium at the beginning of this story.