arthropods
what does the word arthropod mean
jointed foot
what are crustaceans
arthropods with at least 5 pairs of legs,2pairs of antennae, they breath with gills, and have a claw/claws
give 4 examples of an arachnid
spider, scorpion, ticks, mites
which body parts does a spider use to spin its web
spinnerets
describe the body of an insect
three body segments:head, thorax,and abdomens. thorax:3 pairs of legs. most insects: 2 pairs f wings
which invertebrate phylum is the largest
arthropods
give 4 examples of crustaceans
shrimp, lobsters, crabs, and barnacles
describe the characteristics of an arachnid
arthropods with 8 legs and 2 body segments
why are all spider webs not the same
they're designed to suit each spiders method of obtaining food
what type of insect has chewing mouth parts
a beetle
describe the legs and body of an arthropod
jointed legs and segmented bodies
how is a barnacle different from other crustaceans
it has a shell like mollusks and it attaches itself to a surface
what dangers do some arachnids pose to humans
they can deliver painful bites and stings. some can transmit diseases to humans
what is the difference between a centipede and a millipede
centipedes have one pair of legs while millipedes have two pairs of legs. centipedes have poisonis fangs but millipedes are harmless
what mouthparts do mosquitos have and why?
piercing and sucking mouth(why)to suck blood
why must an arthropod molt
it grows and the exoskeleton becomes too small so it sheds and grows another exoskeleton
where do most crustaceans live
what are some diseases that ticks can transmit to humans
lyme disease and rocky mountin spotted fever
what is the most common type of arthropod
insect
why do butterflies have siphoning mouthparts?
because thats how they get nectar from flowers
how are the segments of an arthropod different from the segments of an earthworm
an earthworm is alike while segments are made up of an arthropod and different things with different functions
although a nymph looks like an adult how is it different?
its wings are not fully functional
how do spiders with poor eyesight detect prey
smell, touch, and vibration of their webs
what percentage of arthropods are insects
90 percent
what is metamorphosis?
the prosses of an insect becoming and adult