Brown algae are classified in which phylum?

Study for the IB Marine Science Standard Level Exam. Prepare with interactive quizzes and in-depth explanations. Use our resources to excel in your marine science knowledge!

Multiple Choice

Brown algae are classified in which phylum?

Explanation:
Brown algae are a group of multicellular marine algae that owe their characteristic brown color to the pigment fucoxanthin, which sits alongside chlorophyll in their chloroplasts. This group is classified in the phylum Phaeophyta. They include the large kelp forests and share features like storing energy as laminarin and having cell walls that often contain alginates. These traits distinguish them from green algae (Chlorophyta), red algae (Rhodophyta), and diatoms (Bacillariophyta).

Brown algae are a group of multicellular marine algae that owe their characteristic brown color to the pigment fucoxanthin, which sits alongside chlorophyll in their chloroplasts. This group is classified in the phylum Phaeophyta. They include the large kelp forests and share features like storing energy as laminarin and having cell walls that often contain alginates. These traits distinguish them from green algae (Chlorophyta), red algae (Rhodophyta), and diatoms (Bacillariophyta).

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