chapter 16 (c & d) Flashcards
(29 cards)
how do crustaceans benefit the environment
they eat decaying organic matter on the ocean floor
when the first 2 body segments of an arthropod are fused
cephaolthorax
how many body segments do most arthropods have
3
what is the hard plate of a crustacean called
carapace
do chelicerates care for their young
no
what characteristics do all chelicerates have
- 2 body segments/tagamata
- 4 pairs of legs
- sensory information from feet/eyes
- reproduce sexually
- simple eyes (sometimes more than one)
- pincer things called chelicerate
first three pairs of walking legs are called
what are arthropod skeletons made of
chitin
what do arthropods use for sensory input
eyes and feet
T/F all arthropods have compound eyes
false
what do chelicerates use to breathe
tracheae, and book lungs or gills depending on if they live on land or in water
complete metamorphasis
4 stages: egg, larva, pupa, adult
baby looks much different than the adult
incomplete metamorphasis
baby molts many many times till its a full grown adult
benefits of horseshoe crab blood for humans
an unknown substance inside contains something that can kill cancer cells
how many legs do crustaceans have
10 (decapods)
what body part does an insect use to get nutrition
specialized mouthparts and digestive system
where do crustaceans live
aquatic environments
how does an insect attract a mate
pharamones
insects number of body segments and legs
3 body segments, 6 legs
T/F arthropods are the largest phylum in animalia
true, (insecta = largest class)
how do insects breathe
spiracles to tracheae
what are the pincher-like appendages on a chelicerate
chelicerae
what do spiders use to make silk
spinnerets
what do crustaceans have that other arthropods do not
swimmerets
