Volvox is a colonial, unicellular green alga that forms a sphere of many cells. Upon rupturing, these colonies release smaller, internally housed green spheres.

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Green algae (Chlorophyta) are photosynthetic organisms characterized by cellulose cell walls, starch carbohydrate storage, and chlorophyll a and chlorophyll b pigments. They display diverse life forms ranging from unicellular to colonial and multicellular, which serves as a model for studying the evolution of multicellularity.

Green Algae

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

Chlorella is a large, nonmotile, unicellular green alga that challenges the notion that all cells are small. It has been utilized in genetics research since 1943.

Chlorella

Acetabularia is an exceptionally large, unicellular green alga that challenges the concept that all cells are small. It has been a valuable subject in genetics research since 1943.

Acetabularia

Volvox

Ulva, commonly known as sea lettuce, is a large, multicellular green alga recognized by its edible, green blades.

Ulva

*Chlamydomonas* is a unicellular green alga characterized by two flagella, a single large chloroplast, a nucleus, starch granules, and a light-sensitive stigma (eyespot). It is widely studied as a model organism in molecular biology research.

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