Euglena in the light and in the dark

Six protists get their food in different ways. A function tells how each one feeds, in light and in the dark, but it does not yet know about Euglena. You will finish it, list the protists that make their food in the light, and find the ones that change their way of feeding in the dark.

The idea. Euglenoids make food by photosynthesis in light, and feed on small organisms in the dark. The diatom and Ceratium always make food; Noctiluca and Paramecium always eat; the slime mould Physarum feeds on dead matter.

Your tasks.

1. Finish nutrition so that Euglena makes its food in the light and eats other organisms in the dark.
2. Set in_light to the names that make their food in the light, in order.
3. Set changes to the names whose way of feeding differs between light and dark.