Question

Which of the following is a characteristic feature of chrysophytes?

• A. They have a protein-rich layer called pellicle.
• B. They have an indestructible wall layer deposited with silica.
• C. They are commonly called dinoflagellates.
• D. They are saprophytic protists.

Answer 1

The correct option is B They have an indestructible wall layer deposited with silica.

Chrysophytes are commonly called diatoms. They belong to photosynthetic protists. They have cell walls made of cellulose impregnated with silica. Because of the presence of silica, their cell walls are indestructible. After the diatoms die, their cell walls accumulate and form diatomaceous earth.