24 What are Algae? Can be Unicellular or Multicellular Photosynthetic – make their own foodNo roots, stems, or leavesEach has chlorophyll and other photosynthetic pigments
25 Euglenaphytes Diatoms Dinoflagellates Red, Brown, & Green Algae Phyla of AlgaeEuglenaphytesDiatomsDinoflagellatesRed, Brown, & Green Algae
26 Euglenaphyta Unicellular Aquatic Move around like animals with two flagellaNo cell wall (unlike plants!)Can ingest food from surroundings when light is not available (So, they are autotrophs OR heterotrophs!)
28 Diatoms Unicellular & photosynthetic Abundant and beautiful – like little jewels!Cell walls have patterns and linesTheir cell walls are made of silicon (Si)Photosynthetic pigment called carotenoids – give them a golden color
31 Dinoflagellates: The Spinning Ones Unicellular protistsSpin around using two flagellaSome are photosynthetic and some are heterotrophicSome are bioluminescent!Some kinds are responsible for red tides – toxic “blooms” of dinoflagellates that can be dangerous.
32 Red tides caused by toxic dinoflagellates Red tides caused by toxic dinoflagellates. This red tide killed some fish.
33 Some dinoflagellates create their own light Some dinoflagellates create their own light. This is called bioluminescence.These pictures were taken in Puerto Rico in a place called “Bioluminescent Bay”.
34 Red Algae Reddish seaweeds Live in ocean Multicellular Have red and blue pigments, so they are autotrophs