Question

Which one of the following is a characteristic feature of chrysophytes?

• A. They have an indestructible wall layer deposited with silica
• B. They have a protein rich layer called pellicle
• C. They are parasitic forms which cause diseases in animals
• D. They are commonly called dinoflagellates

Answer 1

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

Chrysophytes belong to the kingdom Protista. Most of them are photosynthetic and hence are autotrophic in their mode of nutrition.

Therefore, the statement in option A is incorrect.

They lack a pellicle rather they have a cell wall which forms two thin overlapping shells, which fit together as in a soap box.

Therefore, the statement in option B is incorrect.

The siliceous cell walls of chrysophytes are indestructible and form deposits which have accumulated since billions of years forming diatomaceous earth.

Therefore, the statement in option C is correct.

These are commonly called diatoms and golden algae (desmids).

Therefore, the statement in option D is incorrect.