Stramenopiles use chlorophyll a, chlorophyll c1/c2, and fucoxanthin as photosynthetic pigments, and store energy as chrysolaminarin. While some species lack cell walls, others have scales.

Characteristics of Stramenopiles

Diatoms, also known as Bacillariophyta, are unicellular stramenopiles characterized by having outer cell walls of crystallized silica called frustules. They are capable of reproducing both sexually and asexually.

Diatoms

Brown algae (Phaeophyta) are multicellular marine seaweeds. They contain photosynthetic pigments, including chlorophyll a, chlorophyll c, $$\beta$$-carotene, and fucoxanthin, and store energy as laminarin. Structurally, they attach to substrates using holdfasts and possess leaf-like blades and stalks, though these do not represent true plant leaves, stems, or roots.

Brown Algae

Golden algae, taxonomically classified as Chrysophyta, are a subgroup of stramenopiles.

Golden Algae

Chromalveolata is a eukaryotic supergroup whose members are characterized and united by similar evolutionary origins of their plastids. This supergroup includes subgroups such as apicomplexans, ciliates, diatoms, dinoflagellates, and water molds (oomycetes).

Chromalveolata

https://openstax.org/details/books/microbiology/

Microbiology covers the scope and sequence requirements for a single-semester microbiology course for non-majors. The book presents the core concepts of microbiology with a focus on applications for careers in allied health. The pedagogical features of the text make the material interesting and accessible while maintaining the career-application focus and scientific rigor inherent in the subject matter. Microbiology’s art program enhances students’ understanding of concepts through clear and effective illustrations, diagrams, and photographs.

Microbiology is produced through a collaborative publishing agreement between OpenStax and the American Society for Microbiology Press. The book aligns with the curriculum guidelines of the American Society for Microbiology.

OpenStax Microbiology Textbook

Dinoflagellates are a subgroup of the Chromalveolata supergroup that are mostly marine organisms and form an important component of plankton. They generally have two flagella that cause a spinning motion and often possess a hard outer covering composed of cellulose plates.

Dinoflagellates

Apicomplexans are a subgroup of the Chromalveolata supergroup that function as intra- or extracellular parasites. They are characterized by having an apical complex at one end of the cell that allows them to enter host cells, and they exhibit complex life cycles that often require transmission between multiple hosts.

Apicomplexans

Ciliates (Ciliophora) are a diverse group within the Chromalveolata characterized by the presence of cilia on their cell surface. These cilia are utilized for movement or feeding, and while many forms are motile, some species are nonmotile.

Ciliates

Oomycetes, also known as water molds, are a group within the Chromalveolata supergroup that were historically classified with fungi due to structural similarities. However, they differ from fungi in that oomycetes possess cell walls made of cellulose rather than chitin, and their dominant life stage is diploid rather than haploid.

Learn Before

Related

Learn After

Learn After

Related