WebApr 4, 2024 · Both benthic and planktonic forms exist. Diatoms are classified as belonging to the Division Chrysophyta of Class Bacillariophyceae. Hence, the correct option is B, … Diatoms belong to a large group of protists, many of which contain plastids rich in chlorophylls a and c. The group has been variously referred to as heterokonts, chrysophytes, chromists or stramenopiles. Many are autotrophs such as golden algae and kelp; and heterotrophs such as water moulds, opalinids, and … See more A diatom (Neo-Latin diatoma) 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 … See more Diatoms are generally 2 to 200 micrometers in size, with a few larger species. Their yellowish-brown chloroplasts, the site of photosynthesis, are typical of heterokonts, having four cell membranes and containing pigments such as the carotenoid See more Most centric and araphid pennate diatoms are nonmotile, and their relatively dense cell walls cause them to readily sink. Planktonic forms in open water usually rely on See more Distribution Diatoms are a widespread group and can be found in the oceans, in fresh water, in soils, and on damp surfaces. They are one of the dominant … See more Diatoms are protists that form massive annual spring and fall blooms in aquatic environments and are estimated to be responsible for … See more Diatom cells are contained within a unique silica cell wall known as a frustule made up of two valves called thecae, that typically overlap one … See more Reproduction and cell size Reproduction among these organisms is asexual by binary fission, during which the diatom divides into … See more
Bacillariophyta: Class, Order and Family Algae - Biology …
WebDiatom Method. Diatoms, unicellular or colonial algae, are detectable in water, air, and soil. The cell wall contains a high quantity of silica and comprises two interconnected units … WebClass: Bacillariophyceae. 1. This class is represented by approximately 200 genera and 600 species. 2. Members are commonly known as diatoms and are commonly found in fresh water, water, in air or on soil. 3. Thallus is unicellular, uninucleate diploid and show radial or bilateral symmetry. 4. slow dementia symptoms
Biology MIDTERM Flashcards Quizlet
WebJun 24, 2024 · The taxonomic classes of diatoms under Bacillariophyta are as follows: Coscinodiscophyceae (centric diatoms) Fragilariophyceae (araphids, i.e. pennate diatoms without a raphe) Bacillariophyceae … WebSolution: Diatoms belong to class Bacillariophyceae of algae. These are called diatoms due to presence of an accessory brown pigment called diatomin. These are unicellular … WebDiatoms belong to the bacillariophycae, which are a class of microscopic unicellular algae involving more than 15 000 species living either in freshwater or in seawater or brackish water. The cell structure of these algae is unique and consists of a frustule that is made up of two valves filling together to enclose the cytoplasmic contents. software company in weston