Question

What are diatoms with examples

Answer 1

Diatoms are the members of kingdom protista.
The are the chief producers of oceans.
They have an indestructive wall made up silica
which deposits in oceans after million of years and forms diatomaceous earth.

Answer 2

$\Huge \bf{\green{Diatoms}}$

✍ Diatoms occurs as freely floating photosynthetic, aquatic organisms. They are commonly called as phytoplanktons.

✍ They carry on photosynthesis and some are saprophytic.

✍ They possess cell wall made up of cellulose and impregnated with silica.

✍ They contain photosynthetic pigments like chlorophylla, C , Diatoxanthin, diadinoxanthin and flucoxanthin.

✍ The reserve food material is oil or Polosycratic Glycon.

✍ Asexual reproduction is by binary fission.

✍ Sexual reproduction occurs by isogamy and anisogamy.

✍ Example ; Navicula , Pinnularia etc.