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Algae, Aljohara Aljeraisy 9A, B6B25E97-F74C-48B7-9BDF-CD1ABDE7304A,…
Algae
Red algae
Phycobilin absorbs blue and violet light that penetrates deeper into the water, allowing red algae to live underwater deeper than other algae.
used to thicken puddings, syrups, and shampoos.
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Dinoflagellates
Some are bioluminescent, meaning they emit light.
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they are unicellular with two flagella at right angles to one another making the dinoflagellate to spin as it moves.
Some are autotrophic, some are heterotrophic.
Green algae
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can be uniceluar, muticelllar or colonial.
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Euglenoids
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Most euglenoids photosynthesize, but do not have a cell wall; they can also be heterotrophs.
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Chrysophytes
most chrysophytes are unicellular, but some are colonial which means they are group of cells that join together and form a close association
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Diatoms
they store food as oil, making them a nutritious food source and float in water.
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Uses for algae
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Algae are high in protein and contain minerals, trace elements, and vitamins.
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Diversity of Algae
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Algae are classified using three criteria: pigment type, method of food storage, and cell wall composition.
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Characteristics of Algae
Algae differ from plants because they do not have roots, leaves, or other structures typical of plants.
Many algae have chlorophyll as their main photosynthetic pigment, and also have accessory pigments to help them absorb light at different wavelengths.
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