NEET BIOLOGY

Detailed explanation-1: -Diatoms (Chromalveolates supergroup, photosynthetic Stramenopiles, Bacillariophyta) are unicellular or colonial eukaryotic algae with unique cell walls, termed frustule, composed of amorphous silica with regular patterns of ornamentation and consisting of two parts.

Detailed explanation-2: -The diatoms are a phylum of unicellular photosynthetic algae and are a group significant for their unique structure and ecology.

Detailed explanation-3: -A distinct feature of diatoms is their cell wall called the frustule, which is made of silica and organic components. The cell wall consists of two halves, the hypotheca and epitheca; each theca consists of structures called valves, linked together by girdle bands which typically encircle the cell.

Detailed explanation-4: -Diatoms. Diatoms are microscopic unicellular algae that have a silica shell that is resistant to acids, heat, or body decomposition. They live in colonies, grow in abundance in fresh and salt waters, and their “skeletons” are widespread in soils.

Detailed explanation-5: -Diatoms are single-celled algae that produce intricately structured cell walls made of nanopatterned silica (SiO(2)). The cell wall structure is a species-specific characteristic demonstrating that diatom silica morphogenesis is genetically encoded.