Arachnids
Define Arachnid
arthropod with two body segments and eight legs
the bulb like suction structures lining the arms of an echinoderm are called
What is the definition of exoskeleton
a series of physical changes that certain animals undergo
What is metamorphosis
Name the four groups of cnidarians.
hydrozoans, jellyfish, sea anemones/corals, and box jellies
eat insects, decompose dead matter and turn it into nutrients for the soil.
and internal skeleton is called
an endoskeleton
Why can crustaceans move rapidly?
they have jointed appendages and ringlike segments in their abdomen.
a scientist who studies insects is called
what is an entomologist
Name two ways that echinoderms defend themselves.
poison, snap off body parts, expel intestines.
His body is fused together, not segmented. No fangs
echinoderms use what to move and to pull things apart
water pressure
What is a maxilliped?
an appendage that helps the crustacean eat.
what is a nymph
the growth of a lost body part is called
regeneration
this arachnid is a predator that feeds mostly on other arthropods.
scorpions
sea urchins
Name 3 crustaceans.
crabs, lobsters, crayfish, shrimp, prawns, pill bugs
what type of insect can still move after it's brain has been removed from it's body
a grasshopper
the needlelike skeletal materials inside a sponge
spicule