Which one of the following statements concerning the algae is wrong?
Algae are eukaryotic organisms that have no roots, stems, or leaves but do have chlorophyll and other pigments for carrying out photosynthesis. Algae can be classified according to their pigments as red algae, brown algae and green algae. No zoospores or cells with flagella are produced by Spirogyra. All algae are not filamentous. Thus, the correct answer is option C.