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Rhodophytes: Also known as red algae
Rhodophytes are the red algae that live mainly in marine waters. They make up the phylum Rodophyta. There are approximately six thousand species of red algae, of which only 165 are freshwater.
- They have photosynthetic pigments of red color (phycoerythrin). They also have carotenoids and chlorophyll a.
- The reserve substance for rhodophytes is the flowering starch.
- Reproduction of red algae may be sexual or asexual depending on the species.
- Most rhodophyte species are multicellular (made up of several cells). Few species are unicellular.
- Many species of red algae secrete calcium carbonate, which act in the formation of coral reefs.
- They have two cell walls.
- Many species live fixed on the marine substrate.
Curiosities: red algae in cooking
- Some species of rhodophytes (red algae) may be used for human consumption. The red algae species nori (Porphyra) is used in Japanese cuisine in the preparation of Sushi.
- The seaweed noriAs well as being tasty, it is also a great source of vitamin C.