Transcript Pond Diversity

Pond Diversity
Classify these organisms
Classification Task
• In the next series of slides, you will be shown
pictures of pond organisms that should look
familiar.
• Use your key to classify each of these to:
• Domain
• Kingdom
• Phylum
• Class (for Arthropods and Vertebrates)
Mallard Duck
• Features:
• Feathers made of
keratin.
• Jaws with keratin
beak.
• Bony skeleton.
Diatoms
• Single-celled
organisms with
nuclei
• Silica shells
• Brown
photosynthetic
pigment.
Daphnia (Water Flea)
• Multicellular
organism about
1mm long.
• Specialized organs,
jointed appendages.
• Exoskeleton made of
chitin, with calcium
carbonate
• Feathery gills
Hydra
• Soft-bodied, multicellular,
heterotrophic organism.
• Uses tentacles to catch
prey.
• Radial symmetry.
• Specialized tissues, but no
specialized organs.
Chlorella
• Tiny single-celled
autotrophs with a
nucleus.
• Cell walls made of
cellulose.
• Forms symbiotic
relationships with
animals such as
Hydra.
Euglena
• Single-celled, motile
organism.
• Uses chloroplasts to
synthesize food.
• Also eats bacteria.
Water Fern
• Multicellular
autotroph.
• Contains vascular
tissue.
• Reproduces using
spores; does not
make seeds.
Stentor
• Single-celled
eukaryote.
• “Mouth” end covered
with tiny cillia that
sweep the water for
food, such as algae,
diatoms.
Rough-skinned Newt
• Bony skeleton, jaws.
• Skin is soft, no
scales.
• Lays jelly-like eggs in
ponds.
Dragonfly
• External skeleton
made of chitin
• Segmented body
• Six legs
• Jointed appendages.
Spirogyra
• Single-celled
autotrophs that form
long, filamentous
colonies.
• Use cholorophyl as a
photsynthetic
pigment and have
cell walls made of
cellulose.
Decomposing Bacteria
• Prokaryotic, singlecelled organisms.
• Responsible for
breaking organic
compounds into
inorganic
compounds.
Oregon Ash
• Multicellular,
terrestrial
autotroph.
• Cell walls made of
cellulose; uses
chlorophyl for
photosynthesis.
• Produces seeds
inside of an ovary.
Amphipods (Scuds)
• Multicellular, motile
heterotrophs.
• Complex organs.
• Jointed appendages.
• External skeleton
reinforced with
calcium carbonate.
Snail
• Multicellular
heterotroph.
• Grazes on algae on the
rocks.
• Hard shell, but no
skeleton.
• True coelom, organs,
complex nervous
system.
Rushes
• Multicellular
autotrophs with cell
walls made of
cellulose.
• Wind-pollinated.
• Flowering head
produces many
seeds inside of
minute ovaries.
Great Blue Heron
• Multicellular, motile
heterotroph.
• Bony skeleton.
• Jaws with a keratin
beak.
• Feathers made of
keratin.
Volvox
• Single-celled
autotrophs with a
nucleus.
• Cell wall made of
cellulose.
• Individuals form
spherical colonies.
Paramecium
• Single-celled
organisms with a
nucleus.
• Entire cell is covered
with cillia for
motility.
• Feed on bacteria,
tiny algae, diatoms.
Backswimmer
• Multicellular
heterotroph with an
external skeleton
made of chitin.
• Six legs.
• Aggressive predator.
Haematococcus
• Single-celled, motile
autotroph with a
nucleus.
• Cell wall made of
cellulose, uses
chlorophyl.
• Uses a flagella for
locomotion.
Fingernail Clams
• Multicellular
heterotroph.
• Pair of external
shells, no skeleton.
• True organs,
complex nervous
system.
Predatory Leech
• Multicellular
heterotroph.
• Segmented body, no
skeleton.
• Closed circulatory
system.
• True coeloem.
Garter Snake
• Multicellular
heterotroph with a
bony skeleton.
• Skin covered in flat
scales made of
keratin.
• Jaws with sharp
fangs.
Cattails
• Multicellular
autotrophs with cell
walls made of
cellulose.
• Small, nondescript
flowers in sausageshaped flowering
head are windpollinated.
Raccoon
• Multicellular
heterotroph with a
bony skeleton and
jaws with teeth.
• Internal fertilization,
retains young inside
the body.
Amoeba proteus
• Single-celled
heterotroph with a
nucleus.
• Asymmetrical.
Moves and catches
food by means of
extensions called
pseudopods.
Food Web
• Take the organisms you have classified,
and organize them into a food web.
• Remember to put the producers at the
bottom, then the first-level consumers,
then the remaining consumers.