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Higher Invertebrates
arthropods & echinoderms
36
Biology
10th Grade
05/27/2014

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Term
What do all arthropods have in common?
Definition
jointed appendages, exoskeleton, segmented body, open circulatory system, central nervous system
Term
What is an exoskeleton?
Definition
skeleton on outside of body, used for protection, made of chitin, must molt
Term
What are the advantages of having an exoskeleton?
Definition
protection, thin/flexible/light
Term
What is the disadvantage of having an exoskeleton?
Definition
must molt, leaves animal vulnerable during that time
Term
Define jointed appendages.
Definition
legs/arms/antennae that can bend
Term
Define open circulatory system.
Definition
heart but no vessels
Term
Give an example of a crustacean.
Definition
crayfish
Term
What characteristics define a crustacean?
Definition
2 body segments, 2 pair antennae, gills, usually have 5 pairs of legs
Term
Give an example of an arachnid.
Definition
spider
Term
What characteristics define an arachnid?
Definition
4 pairs of legs, 2 body segments
Term
Give an example of a chilopod.
Definition
centipede
Term
What characteristics define a chilopod?
Definition
1 pair of legs on each segment, carnivore
Term
Give an example of a diplopod.
Definition
millipede
Term
What characteristics define a diplopod?
Definition
2 pair of legs on each segment, herbivores
Term
Give an example of an insect?
Definition
grasshopper, fly, beetle, butterfly
Term
What characteristics define an insect?
Definition
3 pairs of legs, 3 body segments, usually has wings, 1 pair antennae
Term
Define metamorphosis.
Definition
a series of developmental changes in body form over the lifetime of the organism
Term
What are the 2 types of metamorphosis?
Definition
complete & incomplete
Term
What are the stages of complete metamorphosis?
Definition
egg, larva, pupa, adult
Term
Give an example of an insect that goes through complete metamorphosis.
Definition
butterfly
Term
What are the stages of incomplete metamorphosis?
Definition
egg, nymph, adult
Term
Give an example of an insect that goes through incomplete metamorphosis.
Definition
grasshopper
Term
How are insects important to humans?
Definition
pollination, honey/wax, silk, dyes, etc.
Term
How do insects negatively impact the environment?
Definition
destroy crops, can spread disease
Term
Give an example of an echinoderm.
Definition
starfish
Term
What characteristics do all echinoderms have?
Definition
water vascular system, tube feet, endoskeleton
Term
What is an endoskeleton?
Definition
skeleton on the inside of the body
Term
What is a water vascular system?
Definition
series of tubes that helps water flow through the animal
Term
What is the purpose of tube feet?
Definition
helps echinoderms stick to surfaces
Term
This class has 2 body segments, 2 pair antennae, & usually has 5 pairs of legs
Definition
crustacean
Term
This class has 4 pairs of legs & 2 body segments
Definition
arachnid
Term
This class has 1 pair of legs on each of its body segments.
Definition
chilopod
Term
This class has 2 pair of legs on each of its body segments.
Definition
diplopod
Term
This class has 3 pair of legs and usually has wings.
Definition
insects
Term
This class has an endoskeleton and can regenerate.
Definition
echinoderm
Term
What domain do all animals belong to?
What kingdom?
Definition
Domain: Eukarya
Kingdom: Animal
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