2. • Algae are chlorophyll-bearing autotrophic members of thallophytes
comprising a large heterogeneous assemblage of relatively simple
plants.
• Algae may be aquatic, semi-aquatic, or terrestrial in their habitat.
• In the sea, they make up the major part of the vegetation.
• On pools of calm water, they often form the green-colored “pond
screen” or “pond scum“.
3. Types of algal habitat
• Algae are found everywhere on the earth, in air, water, and soil.
• Three types of algae can be found based on their habitat.
• Terrestrial algae,
• Aquatic algae
• Algae as unusual habitats
4. Terrestrial algae
• Terrestrial algae are also known as edaphophytes.
• The edaphophytes are found upon or inside of the earth.
• They occur on moist soil as a part of soil flora, and also on barks of
trees, on damp wood, on rocks and cliffs, etc.
• They are two types- Saphophytes and Cryptophytes.