A freshwater protist lacks a cell wall, possesses a flexible protein-rich covering and has one short and one long flagel

Practice question

Question

A freshwater protist lacks a cell wall, possesses a flexible protein-rich covering and has one short and one long flagellum. How does it behave when sunlight is unavailable?

Options

Choose one · Correct answer highlighted

It preys on smaller organisms as a heterotroph. Correct It forms resistant spores inside fruiting bodies. It fixes atmospheric nitrogen in heterocysts. It produces basidiospores externally.

Explanation

The organism is a euglenoid. Euglenoids possess a flexible pellicle and two unequal flagella. They photosynthesise in sunlight but behave as heterotrophs by preying on smaller organisms when sunlight is unavailable.

Share this question