Euglena

• Mainly fresh water organisms found in stagnant water.
• Instead of a cell wall, they have a protein rich layer called pellicle which makes their body flexible.
• They have two flagella, a short and a long one.
• They are photosynthetic in the presence of sunlight.
• When deprived of sunlight they behave like heterotrophs by predating on other smaller organisms.
• The pigments of euglenoids are identical to those present in higher plants. Example: Euglena.