Rhodophyta

Definition

Rhodophyta, commonly known as red algae, are a group of primarily aquatic, photosynthetic eukaryotic organisms. They are characterized by their reddish color due to the presence of phycobiliproteins.

5 Must Know Facts For Your Next Test

1. Rhodophyta contain chlorophyll a and phycobiliproteins which give them their red color.
2. They have a unique cell wall composition that includes agar and carrageenan.
3. Most Rhodophyta species are multicellular and marine, thriving in both deep and shallow waters.
4. Their life cycle typically involves an alternation of generations, including both haploid and diploid phases.
5. Rhodophyta play an essential role in marine ecosystems by providing habitat and being primary producers.

Review Questions

• What pigments are responsible for the red coloration in Rhodophyta?
• Describe the typical habitat where most Rhodophyta species can be found.
• What substances found in Rhodophyta cell walls are often used in food and industrial applications?

Related terms

Chlorophyta:

A division of green algae containing chlorophylls a and b.

Phaeophyceae:

A class of brown algae within the division Heterokontophyta.

Phycobiliproteins:

Light-harvesting proteins found in cyanobacteria and certain algae like Rhodophyta.