invertebrates
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| cnidarians | invertebrates that have poison stingers on their tentacles; use them to capture prey
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| mollusks | soft bodies; some live on land (snails/slugs) and some live in water (clams/oysters/squids); bilateral symmetry & many organ systems
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| echinoderms | spiny skinned animals; star design & spiny skin (sand dollar/seastars/sea cucumbers/sea urchins)
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| endoskeleton | internal structure with many protective spines; have tiny tube feet that grab things
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| arthropods | largest of all invertebrate & animal phyla; live everywhere on Earth; have jointed legs & a body divided into sections; some have gills & others have open-tube breathing systems
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| exoskeleton | hard skeleton on the outside of the body; protects & keeps arthropods from drying out; doesn't grow, but is shed by molting
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| chitin | light, tough material that exoskeletons are made of
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| molting | shedding of the exoskeleton
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| invertebrates | animals without backbones
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| sponges | shaped like a sack with an opening in the top; no symmetry, is hollow, & doesn't have bones; can grow back missing parts; has holes in it to filter food from water; adults don't move from place to place, but young sponges do
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| flatworms | flat, ribbonlike bodies, with a head & tail; bilateral symmetry
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| planaria | live in fresh water & eat food with a mouth
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| parasites | live & feed inside the bodies of other animals; no mouth or digestive system; absorb food in their host's intestines
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| roundworms | slender, rounded bodies with pointed ends; include ascaris, hookworms, and vinegar eels; have a one-way digestive system (food enters in one opening, but waste leaves through another)
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| segmented worms | have bodies that are divided into sections; bilateral symmetry & digestive system with 2 openings (one for food to enter & one for waste to exit); earthworms
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| earthworms | segmented worm with a head & tail; has bristles that help it move through the soil; complex organ systems (blood vessels, hearts, and nerves)
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| arachnids | spiders, scorpions, ticks; 8 legs & up to 8 eyes; eat insects; spin webs to capture food
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| crustaceans | crabs, lobsters, shrimp, barnacles, crayfish; antennae for sensing; 10 or fewer legs, including claws; sectioned body; use claws to fight & scare off predators
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| centipedes | less than 100 legs; eat worms, slugs, insects
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| millipedes | more than a 100 legs; eat plants; move slowly & legs move in a wavelike motion
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| insects | beetles, flies, bees, ants, mosquitoes, butterflies, dragonflies; 1 pair of antennae; 6 legs, 2 wings, 3 body sections (head, thorax, legs); special tube for breathing & eyes made of hundreds of lenses; first insects lived about 350 million years ago
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
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Created by:
tjackat
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