I think the sun because plankton have plants and plant need sunlight
Sunlight
fuel
fuel
sun
Mitochondria is responsible for providing energy to the cell.
Phytoplankton does not eat anything, it does something else. Phytoplankton gets its energy directly from the sun through the process of photosynthesis.
mitochondrion - an organelle containing enzymes responsible for producing energy
The Mitochondria.
Mitchondria
Mitochondria
Mitochondria converts the glucose into energy !.
Phytoplankton, or any other single celled organism which produces its energy directly from the sun.
Phytoplankton are photosynthetic organisms. They get their energy from sunlight.
chloroplast