Not exact matches
However, under thermal stress, the accumulation of damaged
cells may exceed the increased rate of expulsion of digested
zooxanthella.
These researchers consider that this loss of
zooxanthellae and the accumulation of damaged
cells results in coral bleaching.
This is a multiple - level symbiosis because corals house the entire chloroplast - containing
zooxanthellae cells within their tissue.
Corals such as the one depicted below have a symbiosis with multiple single -
celled organisms called
zooxanthellae.
«Corals live in a symbiotic relationship with
zooxanthellae, which are plant - like
cells hosted in surface tissues that provide up to 90 % of the energy to the colony,» said Stephen Simpson, a marine biologist at the University of Exeter in the UK, commenting on the study.