How do Euglena species obtain food and energy?

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“mermaid's wine glass” algae — Algae The macroscopic genus of algae known as *Acetabularia* is commonly called “mermaid's wine glass” because of the distinctive umbrella-like shape of the tips of its stalks.

Euglena are unique microorganisms that exhibit both plant and animal characteristics, allowing them to obtain food and energy through multiple methods.1

Modes of Nutrition

Photosynthesis: As photosynthetic protists, most Euglena contain chloroplasts with chlorophyll, enabling them to produce their own energy from sunlight.1
Heterotrophy: Most species can also feed heterotrophically by consuming other organisms. They absorb nutrients directly through their cell surface or ingest food particles via phagocytosis, where the cell membrane entraps particles into a vacuole for digestion.1

Energy Storage

When food is abundant, Euglena store energy in the form of a specialized complex carbohydrate called paramylon. This storage mechanism is vital, as it allows the organisms to survive during periods of low light when photosynthesis is not possible.1