Details About Mycoplasma ,Kingdom Protista , Crysophytes , Euglenoids

 Mycoplasma –

- Smallest unicellular anaerobic organisms having no cellwall.

- Pathogenic in plants and animals.

Kingdom Protista –

- Unicellular eukaryotes.

- Primarily aquatic.

- Some have cilia and flagella.

- Reproduction sexual and asexual both.

Crysophytes –

- Fresh water or marine microscopic Planktons.

- Mostly photosynthetic and cheif producer in ocean eg. Diatomsand Golden algae (Desmids).

- Diatoms with cellwalls in two halves having Silica (indistructible).

- Diatomaceous earth is formed by cellwall  deposits of Diatoms and used in polishing, filtration of oils and syrups, fire bricks and explosives.

Dinofagellates –

- Marine.

- Photosynthetic yellow , green, blue, brown or red in colour.

-  One longitudinal and other transverse two flagella.

- Gonyaulax causes Red tides.

Euglenoids –

- Fresh water forms.

- No cellwall, outer most layer pellicle.

- Two unequal flagella.

- Photosynthetic but also heterotrophic in absence of light ( Mixotroph).