NEET BIOLOGY

Detailed explanation-1: -Diatoms are formally classified as belonging to the Division Chrysophyta, Class Bacillariophyceae. The Chrysophyta are algae which form endoplasmic cysts, store oils rather than starch, possess a bipartite cell wall and secrete silica at some stage of their life cycle.

Detailed explanation-2: -Chlorophylls. Several kinds of chlorophylls are found in photosynthetic organisms; however, only two forms occur in diatoms: Chl a and, identified in various algae, Chl c.

Detailed explanation-3: -Diatoms are single cell eukaryotic microalgae, which present in nearly every water habitat make them ideal tools for a wide range of applications such as oil explora-tion, forensic examination, environmental indication, biosilica pattern generation, toxicity testing and eutrophication of aqueous ecosystems.

Detailed explanation-4: -Though brown algae and diatoms seem to have very little in common morphologically, they are descended from a common ancestor. Both of these groups have a diplontic life cycle during some stage of which a cell will have heterokont flagella.