arthropoda or insect lookin things Flashcards
0
Q
how many species are in this phylum?
A
over 1 million. 80% of all species are in this phylum
1
Q
what organisms are in this phylum?
A
insects, arachnids, crustaceans, spiders, etc
2
Q
characteristics
A
invertebrate segmented joints exoskeleton circulatory system and nervous system
3
Q
how do these organisms reproduce?
A
sexual, internal or external fertilization
4
Q
how many stages are usually in their life cycles?
A
2 (metamorphisis)
5
Q
what are common subgroups?
A
chelicerata, crustacea, and tracheata
6
Q
what are chelicerata?
A
spiders scorpions horseshoe-crabs
have fangs
7
Q
what are crustacea
A
aquatic
shrimp, lobster, crabs
8
Q
what are tracheata
A
insects, centipedes, milipedes
breathe through their sides
