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KINGDOM PROTISTA- most are simple
one-celled organisms. - but a few are multicellular.- all are
eukaryotic.
- live in moist areas or in water.
- Protists can have traits of plants, animals, and fungi.- but are not a plant, animal, or a fungus.
Ex. A euglena
- it has chlorplasts and a ‘tail’ for movement.
- some can cause disease.- dysentary- African
sleeping sickness
- malaria- are believed to
have evolved from bacteria
PLANT-LIKE PROTISTS - are known as
algae.- most live in lakes or
oceans and are a food source for other organisms.
- all have chloroplasts and most have cell walls.
- but not all are green!
Algae is classified according to the pigments they have (color).
1)1)EuglenasEuglenas p. 212(Phylum
Euglenaphyta)
- has traits of both plants and animals.
PLANT ANIMAL
- can move.- has a whip-like
tail called a flagellum
- can absorb food from the water (can live in darkness)
- has chloroplasts.
- can make food.
2) Diatoms (Phylum Chrysophyta)- golden-brown algae.
- most common unicellular organism in the ocean.
(FOOD)
- thousands of shapes. (p. 212)
- Diatoms die and fall to the ocean floor.
- years later - they are mined!
- insulation- road paint- toothpaste
3) Dinoflagellates (Phylum Pyrrophyta)- “fire algae”- are red algae.- have a flagella
which makes it spin.
Dinoflagellates cause Red Tides.- when they
reproduce quickly - the water looks red.
-cause fish kills.
- they give off a waste which is toxic.
5) Red Algae Phylum
Rhodophyta - live in deep
water.- the red (rhodo)
pigment absorbs the limited light in the deeper waters. - is
multicellular.
6) Brown Algae Phylum Phaephyta- multicellular.Ex. kelp
- fastest growing plant.
Lecithin - food thickener.
ANIMAL-LIKE PROTISTSANIMAL-LIKE PROTISTS (p. (p. 215)215)- called
protozoans.(first animal)are unicellular.four types - based on how
they move.
1) Sarcodines Phylum RhyzopodaEx. amoeba (p.
216)- move by using a
pseudopod(false foot)
- are ‘fingers’ of cytoplasm.
- no real shape- always changing.
The pseudopod also captures food.- it ’surrounds’ food particles.- a food vacuole forms around the food and digests it.- the vacuole then moves to the cell membrane and expels the waste.
2) Flagellates Phylum Zoomastigina
- move by using a flagella.
- some have several flagella.
- Many are parasites.
Ex. trypanosoma- causes African Sleeping Sickness
3) Ciliates Phylum Ciliaphora
- move with many small hair-like structures called cilia.
- most complex of the protozoans.
Ex. paramecium
- the cilia ‘push’ water into the oral groove to capture food.
- digested by food vacuoles.
- nutrients absorbed into the cytoplasm.
- waste exits out the anal pore.
Oral groove
nucleus
Anal pore cilia
food vacuole
4) Sporozoans
- cannot move on their own.
- all are parasites.- most feed on blood.- can cause
disease.
-Ex. malaria
--spread by mosquitos
KINGDOM FUNGI (p. 222)
Ex. Mushrooms, yeast, bread mold.
- once placed in the Plant Kingdom.
- but cannot make their own food.
Characteristics:- most are
multicellular.- grow in moist
areas.- grouped by how
they reproduce.- most form spores.
Fungi decompose organic organic mattermatter for food.
Saprophytes- obtains food from dead organisms or waste.
Parasites
Ex. Athlete’s foot
2) Sac Fungi
ex. yeast, morels.
- produce spores in a small sac called an ascus.
- some are destructive
ex. Dutch Elm Disease
4) Imperfect Fungi
- called imperfect because their reproductive cycle is unknown
Ex. Athlete’s Foot
Ringworm
Some fight disease.
Ex. The mold which creates penicillin.
It was the first antibiotic.
- discovered in 1929 by Alexander Fleming.
Lichens
- are part fungus and part algae.
- the algae makes the food.
- the fungus provides shape, support, and water.
MUTUALISM
Lichens often break down rock into soil.
- by releasing a weak acid.
- when it dies, it adds to the new soil. (humus)
It is called a pioneer species.
- the first to live in an area.
Ex. The land surrounding an exploded volcano.