Question

Chlamydomonas is microscopic whereas Sargassum is macroscopic; both are algae. Which characters of these plants includes them in one group?

Answer 1

1.  Both Chlamydomonas and Sargassum belong to division Thallophyta. 

2. Members of Thallophyta range from unicellular (e.g. Chlamydomonas) to multicellular (e.g. Sargassum). 

3. Both are aquatic plants containing photosynthetic pigments. 

4. In both Chlamydomonas and Sargassum plant body is not differentiated into root, stem and leaves. 

5. The stored food is mainly in the form of starch and its other forms. 

6. Cell wall is made up of cellulose and other components. Due to these characters, both Chlamydomonas and Sargassum are included in one group i.e. Thallophyta.