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Hydra viridissima is a species of cnidarian which is commonly found in still or slow-moving freshwater [2] in the Northern temperate zone. Hydra viridissima is commonly called green hydra due to its coloration, which is due to the symbiotic green algae Chlorella vulgaris which live within its body. [3]
The glycocalyx is a type of identifier that the body uses to distinguish between its own healthy cells and transplanted tissues, diseased cells, or invading organisms. Included in the glycocalyx are cell-adhesion molecules that enable cells to adhere to each other and guide the movement of cells during embryonic development. [3]
The chloroplasts of red algae have chlorophylls a and c (often), and phycobilins, while those of green algae have chloroplasts with chlorophyll a and b without phycobilins. Land plants are pigmented similarly to green algae and probably developed from them, thus the Chlorophyta is a sister taxon to the plants; sometimes the Chlorophyta, the ...
Golenkinia is a genus of green algae first described in 1894 by Robert Chodat. [1] The genus is named for the Russian phycologist Mikhail Iljitsch Golenkin . [ 2 ] Golenkinia species live in fresh water (including bodies of black water such as Winyah Bay ) [ 3 ] and are found around the world.
Brown algae have a δ 13 C value in the range of −30.0‰ to −10.5‰, in contrast with red algae and greens. This reflects their different metabolic pathways. [51] They have cellulose walls with alginic acid and also contain the polysaccharide fucoidan in the amorphous sections of their cell walls.
[1] [2] Prochlorococcus strains, called ecotypes, have physiological differences enabling them to exploit different ecological niches. [3] Analysis of the genome sequences of Prochlorococcus strains show that 1,273 [4] genes are common to all strains, and the average genome size is about 2,000 genes. [1] In contrast, eukaryotic algae have over ...
Marine algae can be divided into six groups: green, red and brown algae, euglenophytes, dinoflagellates and diatoms. Dinoflagellates and diatoms are important components of marine algae and have their own sections below. Euglenophytes are a phylum of unicellular flagellates with only a few marine members. Not all algae are microscopic.
[example needed] Most chlorophytes have one or more storage bodies called pyrenoids (central proteinaceous body covered with a starch sheath) that are localised around the chloroplast. Some algae may also store food in the form of oil droplets. The inner cell wall layer is made of cellulose and the outer layer of pectose.