Respuesta :
D. If pillar coral digest zooxanthellae, then the zooxanthellae inside the pillar coral must be dead.
The correct answer is option D
According to this hypothesis that pillar coral digested zooxanthellae, the coral digested zooxanthellae inside the pillar coral must be dead. If anything Β is engulfed then it should be first dead inside the body of the predator and then the energy is extracted from the food. The food eaten serves as a source of energy.