Question

what is the mitochondrion in the following picture referred to as?
fissionate
conjugate
endosymbiont
cyanobacteria

Explanation:

The endosymbiotic theory suggests that mitochondria were once independent prokaryotes that were engulfed by a larger cell and became an organelle. Mitochondria are considered endosymbionts. Fissionate refers to a type of cell - division, conjugate is related to bacterial gene - transfer, and cyanobacteria are photosynthetic bacteria, not what mitochondria are referred to as.

Answer:

C. endosymbiont