| In addition to their mitochondria, plants have a second relic symbiont, the chloroplast. |
| The establishment of symbiosis is the result of a complex series of interactions between the symbiont and the host plant. |
| We have shown that the host animal participates actively in the inorganic carbon absorption for the photosynthesis of its symbiont. |
| A mutualistic symbiotic relationship occurs when both the host and symbiont receive some benefit from the association and neither is harmed. |
| He reckons that it is better perceived as a symbiont that is sometimes helpful and sometimes harmful. |
| If this is indeed so, then symbiont phylogeny should roughly correlate with host phylogeny. |
