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6th - science
2.9-2.11
Question | Answer |
---|---|
worms and mullusks | invertebrates without external skeletons |
castings | the soil that passes through an earthworm's body |
shell | a hard covering |
univalve | one shelled mullusk |
1) swallows soil 2) only decayed plans and animal matter is digested by worm | interesting characteristics of earth worm |
1) enriching the soil 2) keeping the soil light and loose | 2 important jobs of earthworm |
setae | moveable bristles |
how many setae are on each segment? | 8 |
parasite worms - examples? | leeches, tapeworms, roundworms |
fastens on the skin of the host and sucks its blood - ew!! | leech |
grows inside the intestine of the host, robbing it of important nutrients - ew, ew! | tapeworms |
can live in the lymph nodes, intestine, and even the muscle of the host - gross! | roundworms |
gastropod | "stomach foot" |
farmer's enemy? | snail |
does not have a shell | slug |
2 matching fan shaped shells | bivalves |
examples of bivalves? | mussels, clams, scallops |
cephalopods | "head foot" |
examples of cephalopods? | octopus, squid, cuttlefish, nautilus |
sea star has how many rays? | five or more |
have two rows of tiny tube feet (little suction cups) | sea stars |
looks like a pin cushion | sea urchin |
feeds on plant and animal matter that if finds in the water | sea urchin |
family member of the sea urchin | sand dollar |
these range in size from a walnut to 12 feet in height!! | sponges |
these are "decorative deceivers" | sea anemone (remember Nemo???) |
looks like a flower on the ocean floor | sea anemone |
its petals are really tentacles and are always ready to catch a fish or crab - ikes! | sea anemone |
builds a base of limestone | coral polyp |
millions of empty cups are here ... | coral reef |
tiny freshwater invertebrate | hydra |
can change its location by using its tentacles, like to do somersaults :) | hydra |
each tentacle contains stinging cells with poison - ouch!!! | jellyfish |
these guys have many growth changes during its life | jellyfish |
they begin as larvae, fastening to an object, then grow into a polyp and mature its body | jellyfish |
the young adult of these is a free floating medusa | jellyfish |
this is actually a colony of several jellyfish creatures living and working together | portuguese man-of-war |
microscope invertebrates | protozoans |
smalles living unit in any living organism | cell |
the jellylike fluid that fills the cell | cyptoplasm |
directs the WORK of the cell | nucleus |
instructions for running the cell and making needed parts | chromosomes |
possibly as many as 45,000 different types of ... | invertebrates |
has no definite shape | amoeba |
amoebas move by pushing out projections called what? | pseudopods |
psuedopods are also called ... | "false feet" |
a shoe shaped protozoan, looks like a slipper | paramecium |
parameciums are covered with hair called ... | cilia |