the correct answer is
This cell appears to contain a nucleus, chloroplasts, a large central vacuole, and a cell wall in addition to a cell membrane. Thus, it must represent a plant cell.
Light to chemical I think because with out light the photosynthesis products ( O2 and Glucose) would not exist.
B. Filter feeders strain food from water.
Herbivores eat plants.
Carnivores eat meat.
Parasites live off of their host with no benefit to the host.