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diatom

XDict

n. 矽藻类

PyDict

矽藻类

WordNet (r) 3.0 (2006) (WordNet)

diatom
n 1: microscopic unicellular marine or freshwater colonial alga
having cell walls impregnated with silica

The Collaborative International Dictionary of English v.0.48 (gcide)

Diatom \Di"a*tom\ (d[imac]`[.a]*t[o^]m), n. [Gr. dia`tomos cut
in two. See {Diatomous}.]
1. (Bot.) One of the {Diatomace[ae]}, a family of minute
unicellular Alg[ae] having a siliceous covering of great
delicacy, each individual multiplying by spontaneous
division. By some authors diatoms are called
{Bacillari[ae]}, but this word is not in general use.
[1913 Webster]

2. A particle or atom endowed with the vital principle.
[1913 Webster]

The individual is nothing. He is no more than the
diatom, the bit of protoplasm. --Mrs. E. Lynn
Linton.
[1913 Webster]

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Diatom - Wikipedia
A diatom (Neo-Latin diatoma) [a] is any member of a large group comprising several genera of algae, specifically microalgae, found in the oceans, waterways and soils of the world Living diatoms make up a significant portion of Earth's biomass
Diatom | Description, Characteristics, Reproduction | Britannica
diatom, (class Bacillariophyceae), any member of the algal class Bacillariophyceae (division Chromophyta), with about 16,000 species found in sediments or attached to solid substances in all the waters of Earth
What are Diatoms? - Diatoms of North America
Diatoms are algae that live in houses made of glass They are the only organism on the planet with cell walls composed of transparent, opaline silica Diatom cell walls are ornamented by intricate and striking patterns of silica
DiatomBase
The diatoms are an amazing group of organisms, part of the Stremenopile lineage of life These photosynthetic unicells (ranging from 1 µm to over 1 mm in size) have chlorophylls a and c, and a complement of accessory pigments that include xanthophylls and carotenoids, making the living cells golden-brown in color
4. 4: Diatoms - Biology LibreTexts
Diatoms are an incredibly diverse group of unicellular organisms containing anywhere from 20,000 to 2 million species These organisms are unicellular and surrounded by a frustule, a silica shell made from two distinct valves that enclose the plasma membrane
Diatom - Definition and Examples - Biology Online Dictionary
Diatom Definition A diatom is a unicellular eukaryotic alga characterized by having a siliceous covering and a symmetrical body Diatoms are mostly aquatic, being found in fresh, brackish, and saltwater Some are found in moist places, such as soil Diatoms comprise the taxonomic phylum Bacillariophyta They may be solitary or in colonies
Diatoms | Animals | Monterey Bay Aquarium
Diatoms, one of the largest groups of organisms on Earth, are unicellular algae Scientists estimate there could be as many as 2 million species of diatoms — new species are discovered every year Diatoms can be solitary or live in colonies that might be shaped like long chains, stars or zigzags
Identifying Common Diatom Species: A Step-by-Step Guide
Diatoms are microscopic, single-celled algae that belong to the class Bacillariophyceae They are an essential component of aquatic ecosystems and play a crucial role in the global carbon cycle With their unique silica cell walls, diatoms exhibit a stunning variety of shapes, sizes, and patterns
Diatom Structure: Frustule, Form, and Function - Biology Insights
The number of diatom species is vast, with estimates suggesting there could be up to 100,000 different kinds The Glass House (The Frustule) At the heart of every diatom is its unique cell wall, a structure called the frustule This intricate casing is composed of hydrated silicon dioxide, chemically similar to opal or glass
Diatom - Definition, Reproduction and Location - Biology Dictionary
Diatoms (pictured below) are a common type of unicellular phytoplankton that likely originated around the Jurassic period Diatoms can form colonies characterized by particular shapes (e g , stars, fans, and ribbons) and are encapsulated by a unique cell wall composed of silica, termed a frustule

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