Protists

By Vanessa A, Emily A, and Vanessa C

WHAT ARE PROTISTS?

-organisms that are not plants, animals, or fungi. -They share characteristics with the organisms in the other kingdoms but differ from them in some way.Therefore because they do not fit into one of the three Eukaryotic kingdoms, they are all put into the “everything else” which makes Kingdom Protista the most diverse kingdom.

-The three groups of Protists are, Animal-Like, Plant-Like, and Fungus-Like

FUNGUS-LIKE PROTISTS

By: Vanessa Corridore

WHAT ARE FUNGUS LIKE PROTISTS? Fungus like protists are organisms that

are similar to fungi. They live in wet damp environments Create Spores to reproduce Come in a variety of shapes and colours

depending on the environment Slime Moulds can travel at a rate of 1/25

inch per hour

THE THREE TYPES OF FUNGUS LIKE PROTISTS

Plasmodial Slime Moulds: Phylum Myxomycota

Cellular Slime Moulds: Phylum Acrasiomycota

Water Moulds: Phylum Oomycota

PLASMODIAL SLIME MOULDS

Life Cycle:

Stage 1: Large colourful Blob

Stage 2: when food is scarce, the blob will separate into smaller blobs

Stage3: They will form a reproductive stalk and produce spores

Stage 4: These spores will eventually become new slime moulds.

Type Of reproduction: Sexual Reproduction, and Asexual Reproduction producing Spores

Habitat: Forests, dead/decaying waste and organisms, rotting piles of wood, composts, and thick wet lawns. They absorb nutrients from decaying waste and bacteria.

General Physical Structure:

External- Visible blob- like organism. Can look like slugs, Gooey or foamy Masses, and spilled Jelly. They may be bright orange, red, yellow, black, blue, or white.

Internal- eukaryotic, single cellular, nuclei are generally Diploid, one big cell wall surrounds entire organism.

CELLULAR SLIME MOULDS

Life Cycle:

Stage 1: spends most of its life as a amoeba-like cell

Stage 2: When food is scarce, it will send out signals to attract members of the same species. They will then gather together and form a slug-like organism.

Stage 3: This organism will then move to find food. When food is found it stops, absorbs nutrients, and produce asexual ``frutting bodies`` which develop spores

Stage 4: each spore will germinate into single amoeba -like cells

Type of Reproduction: Sexual and asexual

Habitat and diet: Forests, Composts, Dead or decaying material. Their diet consists of bacteria, and fungi from their waste.

General Physical Structure:

External: amoeba-like cell in stage 1 and 4. Slug-like organism in stage 2 and 3. Colour and shape similar to plasmodial slime.

Internal External: eukaryotic, nuclei are generally haploid, Spores produce haploid cells that fuse together during reproduction.

WATER MOULDS

Life Cycle: Stage 1: spends life absorbing nutrients from decaying wasteStage 2: creates spores to reproduceStage 3: hyphae in the spore form sexual structures , eggs and sperm

are producedStage 4: fertilization occurs and creates more water mould

Types of Reproduction: Sexually, and Asexually

Habitat: Live on dead and decaying matter in with fresh water, upper layers of moist soil

General Physical Structure: External: look like tiny threads with a hazy covering internal: eukaryotic, cells are diploid, Spores produce Haploid

Cells few are parasites, most are decomposers

FUNGUS – LIKE PROTISTS VS FUNGI

Similarities: Spores: small particles that allow the fungus-

like Protists to reproduce, similar to a plant seed.

Heterotrophs: cannot make their own food through photosynthesis, need to consume

other organisms to survive. (Heterotroph by absorption)

Differences: Cell Wall/membrane Composition:

lack Chitin, have cellulose insted They can move! 1/25 inch per hour

SUMMARYType: Description

Plasmodial Slime Moulds Single cell organism with thousands of nuclei. Looks like a colourful blob(s), moves slowly like an amoeba

Cellular Slime Moulds Single cell-like amoeba. Attracts other cells that gather together to form one large moving slug

Water Moulds Single cell organism. Looks like white hair like strands on decaying aquatic waste

ALL FUNGUS- LIKE PROTISTS -produce Spores

-Are Heterotrophs that absorb nutrients from decaying organisms

-Can Move Have Cellulose in their cell walls

-Live in damp wet environments such as forests, swamps, composts, and on dead or decaying

organisms. -Diet consists of Bacteria and other microorganisms - Play an important role in many forest ecosystems

by recycling and decomposing waste They reproduce both Sexually and Asexually Come in many different colours, shapes, sizes, and

forms depending on their surrounding environment

PLANT-LIKEPROTISTS

By: Vanessa Agnelli

I’m a protist!

WHAT ARE PLANT-LIKE PROTISTS?•Mostly autotrophic• Autotrophic: an organism that captures

energy sunlight to produce it’s own food•Get their nutrients by performing photosynthesis•Live in the soil, on the barks of trees, in fresh water, and in salt water• Usually reproduce asexually Release their eggs into their environment where the sperm will fertilize the egg

PROTOPHYTAFirst plants

Phytoplankton: a single-celled, free-floating aquatic organism; a form of plant-like protist

•Growth depends on availability of carbon dioxide, sunlight, and nutrients•Lifespan of an individual phytoplankton is rarely more than a few days•Under the right conditions, phytoplankton populations can grow explosively known as the “bloom”

PIGMENTATION

Phylum pheophyta Phylum rhodophyta

Phylum chlorophyta

UNICELLULAR PLANT-LIKE PROTISTS

DIATOMS

•Glass-like cell walls•Very small•More than 100,000 diff erent species of diatoms•Used in nanotechnology b/c structure and size

Red tide: a coastal phenomenon in which dinoflagellates that contain red pigments are so concentrated that the seawater has a distinct red colour

DINOFLAGELLATES

•Reproduces very quickly leads to “algae blooms”•Has two flagella at right angles to each other organisms move by spinning through the water

•Can live in both marine and fresh-water environments•However, dinoflagellates are not always harmful ex. they benefit coral reefs

EUGLENOIDS

•both autotrophs and heterotrophs makes own food, through photosynthesis when there is enough sunlight but can consume and process nutrients when sunlight is not readily available•have a light-detecting structure called an eyespot and uses it to orient themselves towards light

ANIMAL-LIKE PROTISTSTerms to know: Parasite, Pseudopod,

Cilium, Flagellum

By Emily Anderson

Overview

Also known as Protozoans Animal-like protists are heterotrophs Many are parasitic Topics to Discuss:

The Cercozoans The Ciliates The Flagellates The Sporozoans

The Cercozoans

Phylum Cercozoa Can be free-living or parasitic Found in soil, freshwater and marine

habitats Well-known cercozoan is the ameoba Pseudopod (“false foot”) Helps with movement and feeding

The Ciliates

Phylum Ciliphora Single-celled Have short, hair-like projections called cilia Abundant in almost every environment

with liquid water Can be seen by the unaided eye Have organelles that are parallel in function

to the organs of multicellular creatures Only known human parasite is Balantidium

coli (large intestines)

Paramecia

Example of a ciliate Genus Paramecium Large and complex

The Flagellates

Phylum Zoomastigina Have one or more flagella (long hair-like

projection) that whip from side to side to help it move

Can be parasitic, free-living, or in mutualistic relationships

Help organisms to digest their food

The Sporozoans

Phylum Sporozoa Parasites of animals Sexual and asexual reproduction Alternate between 2 hosts Spores (protective capsules) No cilia, no flagella, no pseudopods

Malaria

Protists in the Genus Plasmodium cause malaria in humans

Transferred from mosquitos to humans