Palmella stage is present in

Palmella stage is present in Chlamydomonas. In adverse conditions, the daughter protoplasts formed by division, do not develop neuromotor apparatus and become motile. However, the parent cell wall gelatinises and forms a matrix around the daughter protoplasts. All cells of palmella stage develop flagella and become motile. They escape from the gelatinous matrix on the arrival of favourable conditions.