Explain the characteristic features of group chrysophytes and give its example.

Explanation

This group includes diatoms and golden algae (desmids).
Habitat: They are microscopic and float passively in water currents (plankton).
Mode of nutrition : Most of them are photosynthetic.
Body organisation : In diatoms the cell wall form two thin overlapping shells, which fit together as in a soap box.
The walls are embedded with silica and thus the walls are indestructible.
Thus diatoms have left behind large amount of cell wall deposits in their habitat, this accumulation over billion of years is referred to as "diatomaceous earth".
Function: Being gritty this soil is used in polishing, filtration of oils and syrups.
Diatoms are the chief .Producers. in the oceans.