true roots, stems and leaves, and a vascular system
what does the algae lack
Monera, Protista, Plantae
classification of kingdoms under Algae
diatoms, volvox, spirogyra
unicellular microscopic algae
giant kelp-Sargassum
macroscopic multicellular forms
Cyanobacteria (blue green algae)
prokaryotic algae
fragmentation, binary fission and mitosis
algae form of reproduction
Planktons
community of microscopic organisms
Cyanobacteria or Cyanophyta
Unicellular, procaryotic and photosynthetic microorganisms that are able to produce their own food and oxygen
monera
Cyanobacteria kingdom
Nostoc, Anabaena, Oscillatoria, Spirulina
they are nitrogen fixers from the atmosphere
Can be used as fertilizer in paddy rice
Microcystis, Aphanizomenon
produce toxins capable of causing illness in humans and animals
gastroenteritis, neurological disorders, and possibly cancer
toxins can cause this disease in humans
Nostoc
are cultivated and consumed as a foodstuff in some countries
Euglenophyta or Euglenoids
• Unicellular, eukaryotic aquatic algae. • with chlorophylls a and b • Lives in freshwater. • motile with the use of flagella. • doesn't have a cell wall, but has a flexible outer layer called a pellicle or periplast.
Protista
kingdom of euglenoids
Pellicle or Periplast
doesn't have a cell wall, but has a flexible outer layer called
polysaccharide, paramylon
form food is stored under Euglenoids
Pyrrophyta (dinoflagellates)
• unicellular photosynthetic eukaryotic algae
• contain several pigments (chlorophyll A, C2 and pyridinine, others have chlorophyll A, C1, C2 and fucoxantin) that can photosynthesize.
• reserve material is starch
• cell wall is with cellulose
protista
kingdom of Fire algae
Gonyaulax and Gymnodium
examples of Fire algae
Dinoflagellates
responsible for red tides
secrete neurotoxins that cause massive fish death
Biotoxin
affects the nervous system and paralyzes muscles.
Paralytic Shellfish Poison
high levels of this can cause severe illness and death
Diatoms
esponsible for 20% of global carbon fixation and marine primary productivity. • form asubstantial basis of the marine food web.
protista
kingdom of chrysophyta
Chrysophyta
Diatoms, Golden-brown algae,Yellow-green algae
Prymnesium parvum
Some cause fish kills such as
Synura spp.
primary source of food for zooplankton
Chlorophyta
Believed to be precursor of higher plants- with chlorophylls a, b- reserve material is starch- cell wall with cellulose
Volvox
contribute to the production of oxygen and serve as food for a number of aquatic organisms, especially the microscopic invertebrates called rotifers.
Spirogyra sp.
is valued for human consumption • known as an important source of natural bioactive compounds for antibiotic, antiviral, antioxidant, anti-inflammatory, and cytotoxic purposes.