Microscopic unicellular forms to large plant bodies
Small colonies to large plants
Microscopic unicellular forms to small colonies
Large plant bodies to small colonies
Solution
The form and size of algae is highly variable, ranging from microscopic unicellular forms like Chlamydomonas, to colonial forms like Volvox, and to filamentous forms like Ulothrix and Spirogyra. Some marine forms, such as kelps, can form massive plant bodies.