Arthropods Flashcards
arthropod
phylum of animals with a segmented body, jointed limbs, and usually a shell that undergoes moltings
molting
shedding a shell to make room for growth
pheromones
chemical substance produced by animals that serves as a stimulus for other individuals
thorax
holds the ribcage, heart, and lungs; between the abdomen and the head
abdomen
the posterior section, after the thorax
cephalothorax
head and thorax fused together
exoskeleton
outside skeleton/shell that protects the body
cheliped
a pair of legs bearing a chela, or claw
malpighean tubes
excretory tubes in some arthropods
arachnid
has four pairs of segmented legs and a body with two regions (ex: spiders, scorpions, ticks)
metamorphosis
physical change in structure after hatching or birth (ex: tadpole becoming a frog)
crustaceans
mostly aquatic arthropods with a hard shell, pair of appendages on each segment, and two pairs of antennae (ex: lobsters, shrimp, crabs, barnacles)
insects
small arthropods with three pairs of legs, usually two pairs of wings, and a body divided into three segments
antennae
paired appendages used for sensing
swimmerets
abdominal appendages specialized for swimming and carrying eggs
green glands
open at the bases of larger antennae, have an excretory function in crustaceans
what class is a wood tick in?
arachnid
what class is a butterfly in?
insect
what class is a housefly in?
insect
what class is a mosquito in?
insect
what class is a crab in?
malocostraca
what class is a lobster in?
malocostraca
what class is a spider in?
arachnid
what class is a scorpion in?
arachnid
