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Algae IS a plant. It gets energy from the sun, not other plants.
algae and any other live plants are the producers.
Non-vascular plants
Algae are plants.
Algae and other plants make their own food from sunlight, so they are producers.
algae are autotrophs. algae use photosynthesis to convert light energy into food.
While algae is a plant, it differs from other plants by lacking a stem and a root
The autotrophs that are the main producers of tidal flats and salt marshes are algae. Algae can also be found in other environments as well.
herbivore
plants
Algae was the dominant plant of the Ordovician. There were little to no other plants (other then algae) during the Ordovician. In the Ordovician, the common types of algae were Stromatolites (Blue green algae), and Tetradium (Red algae).
Algae lack specialized tissues like roots, stems, and leaves that are present in plants. Instead, algae have simple structures for attachment and nutrient absorption.