Categorie: Tutti - photosynthesis - protists - algae - unicellular

da Lilly Sarya mancano 2 anni

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Protists

Protists encompass a diverse group of organisms, often classified by their plant-like or animal-like characteristics. Plant-like protists, commonly known as algae, leverage sunlight to produce their own food through photosynthesis and can be either unicellular or multicellular.

Protists

Protists

Plant-Like

Characteristics
there are 7 main types
some are multicellular
Some are unicellular
uses suns energy to produce its own food
Commonly called algae
Autotophs
Brown Algae

has a plant-like structure

Seaweed with many pigments

Green Algae

Closely related to plants

unicellular, multicelluar, or colonial

colonial organisms live attached to others

contains green pigment

Red Algae

The red chlorophyll in it gives it color

used in hair conditioner and Ice cream

only needs small amount of sunlight

Multicellular seaweed

Euglenoids

use flagella for movement

can be autotrophs or heterotrophs

Green unicellular algae found in fresh water

dinoflagellates

Responsible for "Red Tides"

Have potential to kill other organisms

as result of rapid accumulation of algae, in water column

Usually in costal areas

Common name for Algal bloom

Have two flagella

come in lots colors even glow in dark

Unicellular algae surrounded by stiff plates

Diatoms

Used in household scoring products and insecticides.

moves by oozing chemicals out of cell walls.

float near the surface of lakes and oceans

unicellular

Have glass-like cell walls

Algae

Contain chlorophyll and photosynthesis

Most live in water, some on damp surfaces.

Very important in oxygen production

Plant like protists

decomposer

Fungi
Water Molds and Downy Mildews

responsible for irish potato famine

they grow tiny threads that look like fuzz

Most live in water

slime mold-

size ranges from centimeters to meters

live in moist shady places

Brightly colored

Charachteristics

Use spores to reproduce

Spore- Tiny cell that can grow into a new organism

Have cell walls

Heterotrophs

Animal Like

Characteristics:
Unicellular
no cell wall
made of cells with a nucleus
Can move to obtain food
Get energy from other organisms
Called protozoans
Heterotroph
Sarcodeans

Example: Amoeba Proteus

Named after greek god that could change shape

Most well known amoeba

Have contractile vacuole

collects and expels water in the cell.

Pseudopods (false feet) to get food

Extension of the cell (bulge) that engulfs food and moves.

Animal like protist that moves to obtain food

parasites

Example: plasmodium

Causes malaria

Most have more than one host.

Animal- Like protists that feed on the cell and body fluids of their host

ciliates

Example: Paramecium

Animal- like protists that use cilia to move and eat

Cilia= Hair-Like projections from the cell that move in waves.

sweeps food to the ciliates

Work together like oars to beat and move.

flagellates

Example: Paranema

They can have one or more flagella

Animal-like protists that use Flagella to move

Flagella= whip like tail structure