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Algae - Plantlike protist, Areeb Altubaishy, aljohara alhoshan - Coggle…
Algae - Plantlike protist
brown algae
Phylum Phaeophyta contain the brown algae, some of the largest and most plantlike multicellular algae.
More than 1500 species live along rocky coastlines.
Color comes from secondary pigment called fucoxanthin.
Dinoflagellates
Dinoflagellates have cell walls made of cellulose.
Phylum Pyrrophyta are dinoflagellates
Some are bioluminescent, meaning they emit light
Chrysophytes
Phylum Chrysophyta, chrysophytes, are yellow-green or golden-brown algae
Have carotenoids as a photosynthetic pigment
Most chrysophytes are unicellular, but some are colonial.
green algae
Can be unicellular, multicellular, or colonial
Have cell walls and store food as carbohydrates
Phylum Chlorophyta, green algae, are photosynthetic organisms that have much in common with plants.
Euglenoids
Contain characteristics of both plants and animals.
Most euglenoids photosynthesize, but do not have a cell wall; they can also be heterotrophs.
Phylum Euglenophyta, euglenoids, are unicellular plantlike protists.
diatoms
Diatoms are photosynthetic autotrophs that use chlorophyll and carotenoids as pigments.
They store food as oil, making them a nutritious food source and buoyant in water.
Diatom cell walls are composed of silica.
Characteristics of Algae
Algae are plantlike protists that contain photosynthetic pigments.
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.
Diversity of Algae
Algae can be single or multicellular
Some unicellular algae are called phytoplankton and form the base of many aquatic food webs.
Algae are classified using three criteria: pigment type, method of food storage, and cell wall composition.
Areeb Altubaishy
aljohara alhoshan