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hugytuuio

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ngwis garcia

on 23 March 2017

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Transcript of hugytuuio

Phylum Chlorophyta
More than 7,000 species called green algae
The Seven Phyla of Algae
Phylum Phaeophyta
Contains 1,500 species brown algae
Phylum Rhodophyta
Contains 4,000 species of red algae
Algal Diversity
Ngwis and Asher
Phylum Bacillariophyta
Diatoms
Phylum Chrysophyta
Contains 850 species of organisms called golden algae
Phylum Dinoflagellata
Dinoflagellata has 1,100 species
Phylum Euglenophyta
Contains 1,000 species of flagellated unicellular algae called
Euglenoids
11,500 Species
Cell walls are 2 piece shells called
Valves
Shells contain Silicon Dioxide
Centric Diatoms
Circular or Triangular
Most are in marine settings
Pennate Diatoms
Rectangular shells
Freshwater lakes and ponds
Throws threads like a spider to pull themselves forward
Qualities of Diatoms
Essential source of nutrients
Found in phytoplankton
Huge energy source for marine life
When they die
Shell accumulate into layers called
Diatomaceous Earth
Makes paint removers, detergents, fertilizers,insulators, and toothpaste
Small, unicellular
Major producer of organic matter
Photosynthetic
Yellowish green/brown color because of large ammounts of carotenoids with chlorophyll
a
and
c
Have 2 flagella of unequal length
They spin like a top in water
Cell walls are made of cellulose plates
Looks like armor
Some dinoflagellates, such as
Noctiluca
can produce
bioluminescence
, which is a sparkling light in the dark
Others produce toxins/Red Pigments
Results in a
Red Tide
Water turns brownish red
Common in the Gulf Of Mexico
Shellfish and oysters eat dinoflagellates but when a human eats an oyster or shellfish they are dangerous
Live in fresh water
Form highly resistant cysts that enable them to survive beneath frozen surfaces of lakes in the winter and dry lake beds in the summer
Most are yellow or brown due to large amounts of cartenoids
Also has chlorophylls
a
and
c
Golden algae stores much of their surplus energy as oil and are important in the formation of petrolium deposits
Plant-like
Has chlorophylls
a
and
b
Photosynthetic
Animal-like
No cell wall
Highly motile
Also contains pigments known as carotenoids
Live in fresh water
Some live in soil and digestive tracts of animals
A familiar genus of euglenoids is
Euglena
Eulenophyta continued
Abundant in fresh water, especially water polluted by excess nutrients
Has an elastic, transprent pellicle made of protein just beneath its cell membrane
Has a contractile vacuole to rid the cell of excess water
Lacks a cell wall
Flexible
Can change shape
Usually photosynthetic but if raised in a dark environment it will not form chloroplasts and will become heterotrophic
Body structures range from single cell to multicellular
Most species are aquatic
Some are terrestrial
Some live in cells of invertebrates and live as symbiotic partners called lichens
Green algae gave rise to land plants
Both groups have chloroplasts with chlorophylls
a
and
b
Both have carotenoids and stre food as starch
Both green algae and plants have cell walls made of cellulose
Mostly marine
Include seaweed and kelp
Most common along cool rocky shores or offshore in floating "mats"
Large multicellular organisms
147 feet long
Contain chlorophylls
a
and
c
Contains large ammounts of pigment-
Fucoxanthin
Makes them Brownich color
Can reach up to 100m by anchoring the thalus to the bottom of the ocean
Stemlike portion called
stipe
.
Leaf like area called the
blade
.
Cell walls contain alginic acids which makes
Alginate
Used in cosmetics, foods, drugs and a stabalizer in ice cream
Live in fresh water or on land
Most are seaweeds
Red algae is smaller than brown algae
Found as deep as 200m (657 ft)
Contains chlorophyll a
Contains pigment called
phycobilins
Phycobilins play an important role in absorbing light for photosynthesis
Able to absorb wavelengths of light that penetrates deeply into the water
Not all red alae is red
Color varies based on depth where they live
Cell walls are coated with a sticky substance called
Carageenan
Carageenan is a polysacharide used in cosmetics, gelatin capsules, and cheese
Agar
is also found in red algae
Used in gel-forming base
Lamarin
is a carbohydrate with glucose units that are linked differently than those in starch
Full transcript