10. What are the characteristic features of Euglenoids?

 Some characteristic features of Euglenoids are as follows.
- Euglenoids (such as Euglena) are unicellular protists commonly found in fresh
water.
- Instead of cell wall, a protein-rich cell membrane known as pellicle is present.
- They bear two flagella on the anterior end of the body.
- A small light sensitive eye spot is present.
- They contain photosynthetic pigments such as chlorophyll and can thus prepare
their own food. However, in absence of light, they behave similar to heterotrophs
by capturing other small aquatic organisms.
- They have both plant and animal-like features, which makes them difficult to
classify.