The correct answer is Option (3) - Brown algae
Brown algae
- The members of the family Phaeophyceae are commonly known as brown algae. Brown algae are a group of multicellular algae that are found primarily in marine environments. They are called "brown" due to the presence of pigments like fucoxanthin, which imparts a brown color to these algae. Examples of brown algae include kelp and seaweed.
Green algae:
- Green algae belong to the division Chlorophyta. They are characterized by the presence of chlorophyll, giving them a green color. Green algae can be found in various environments, including freshwater and marine habitats. Examples include Spirogyra and Chlamydomonas.
Red algae:
- Red algae are members of the division Rhodophyta. They are known for their red pigments, such as phycoerythrin, which masks the green chlorophyll. Red algae are primarily marine and are important for coral reef formation. Examples include Corallina and Porphyra.
Blue-green algae:
- Blue-green algae, also known as cyanobacteria, are prokaryotic organisms rather than true algae. They are characterized by the bluish-green color imparted by pigments like phycocyanin. Cyanobacteria can be found in various environments, including freshwater and terrestrial habitats.
These classifications are based on the color pigments present in the algae, influencing their appearance in different environments.
|
