Red algae, or Rhodophyta (/roʊˈdɒfɪtə/, /ˌroʊdəˈfaɪtə/; from Ancient Greek ῥόδον (rhódon) 'rose' and φυτόν (phutón) 'plant'), make up one of the oldest...

are examples of algae with secondary chloroplasts derived from endosymbiotic red algae, which they acquired via phagocytosis. Algae exhibit a wide range...

A harmful algal bloom (HAB), or excessive algae growth, sometimes called a red tide in marine environments, is an algal bloom that causes negative impacts...

Coralline algae are red algae in the order Corallinales. They are characterized by a thallus that is hard because of calcareous deposits contained within...

Brown algae (sg.: alga) are a large group of multicellular algae comprising the class Phaeophyceae. They include many seaweeds located in colder waters...

the group varies from about 14 to 26. Together with the red algae (Rhodophyta) and the green algae plus land plants (Viridiplantae or Chloroplastida), they...

only known fish species to consume red algae, including ‘black brush’ or ‘beard’ algae. Closely related is the red algae-eater Crossocheilus langei, a species...

also occurred in the red and brown algae). Diplobiontic green algae include isomorphic and heteromorphic forms. In isomorphic algae, the morphology is identical...

belong to one of several groups of multicellular algae: the red algae, green algae, and brown algae. Seaweeds are also harvested or cultivated for the...

photosynthesis is performed. Photoautotrophic eukaryotes such as red algae, green algae and plants perform photosynthesis in chlorophyllic organelles that...

one of the only fish that will graze on "black brush algae" (freshwater Rhodophyta, or red algae), but even so will eat anything else in preference. Fishes...

the diatoms, golden algae, haptophytes (coccoliths), silicoflagellates, tintinnids (ciliates), dinoflagellates, green algae, red algae, heliozoans, radiolarians...

cultivated within algae scrubbers. Few algae, such as marimo or red moss, are sought after for aquascaping in freshwater aquaria. Green algae respond strongly...

derived from secondary endosymbiosis of red algae, however dinoflagellates with plastids derived from green algae and tertiary endosymbiosis of diatoms...

green algae, ochrophytes, euglenophytes) to amoeboid cells (chlorarachniophytes) to colonial and multicellular macroscopic forms (e.g., red algae, some...

edible seaweed used in Japanese cuisine, usually made from species of the red algae genus Pyropia, including P. yezoensis and P. tenera. It has a strong and...

major group of eukaryotes, comprising the photoautotrophic red algae (Rhodophyta), green algae, land plants, and the minor group glaucophytes. It also includes...

made of small cubes of agar jelly, a white translucent jelly made from red algae. The agar is dissolved with water (or fruit juice such as apple juice)...

1.5 billion years ago in the Archaeplastida clade—land plants, red algae, green algae and glaucophytes—probably with a cyanobiont, a symbiotic cyanobacteria...

membranes of the chloroplast. All secondary chloroplasts come from green and red algae. No secondary chloroplasts from glaucophytes have been observed, probably...

six eukaryotic lineages: animals, symbiomycotan fungi, brown algae, red algae, green algae, and land plants. Eukaryotes are grouped by genomic similarities...

definition based on genomes includes the Viridiplantae, along with the red algae and the glaucophytes, in the clade Archaeplastida. There are about 380...

salinity and temperature. P. cetinaensis differs from other coralline red algae species in that it forms extensive and conspicuous crusts thickened with...

tail known as a flagellum, which are known as spermatozoa, while some red algae and fungi produce non-motile sperm cells, known as spermatia. Flowering...

consisting of polysaccharides obtained from the cell walls of some species of red algae, primarily from "ogonori" and "tengusa". As found in nature, agar is a...

thalloid algae. The thalli take a crustose form. The only species currently recognised is Minium parvum. Guiry, M.D.; Guiry, G.M. (2008). "Minium". AlgaeBase...

is a herbivore that feeds on brown algae, but its close relative A. californica feeds almost exclusively on red algae. This difference in food sources likely...

motility and predation, and lack a cell wall, as found in plants and many algae. This classification remained widespread in the 19th and early 20th century...

Florideophyceae is a class of exclusively multicellular red algae. They were once thought to be the only algae to bear pit connections, but these have since been...

term life history is often used, particularly for organisms such as the red algae which have three multicellular stages (or more), rather than two. Life...