ICSE Class 9 Answered

Chlamydomonas appears to be green algae, which are also sometimes classified as a plant. This is because what we typically think of as plants evolved from the green algae, whereas other algae taxa such as diatoms, red algae, and brown algae are evolutionarily distinct. Although Chlamydomonas is a unicellular algae, it has many distinct physiology and morphology.

1. Photoactive modulation

2. Reserved food material

3. Mode of nutrition

4. Anatomy

Because of these distinct characters, taxonomists faced the dilemma and thus, Chlamydomonas was kept in two kingdoms, Kingdom Protista and Kingdom Plantae.