If a cell was observed under the microscope and found to have a rigid cell wall and be green in color that cell is most likely a animal cell plant cell bacterium cell algae cell

If the cell is green, that would mean that it contains the pigment of chlorophyll (suggesting that it is a plant cell). In addition, a rigid cell wall means the cell is part of a stronger structure, so it is likely a plant cell.

Hydrosphere is the correct answer