Phylum Arthropoda
Phylum Arthropoda
1
What does Arthropoda mean and examples?
“jointed feet” or “jointed legs.”
Examples: insects, spiders, crabs, crayfish, and centipedes.
1
Crayfish body regions?
Cephalothorax, abdomen, tail.
1
Arthropod skeleton type?
Exoskeleton (outside skeleton).
1
Tail fan parts (end of a crayfish)?
Telson (the middle pointed piece of the tail fan)
&
Uropods (the flat side pieces of the tail fan).
1
Exoskeleton made of what?
Chitin (calcium carbonate).
1
What are chelipeds?
Big claws.
1
Why do arthropods molt?
Molt means to shed the old exoskeleton, they do this to grow their body.
1
Function of crayfish gills?
Gas exchange.
1
What is an instar?
A growth stage of an arthropod between molts.
1
Male crayfish special structure?
Modified swimmerets used to transfer sperm to the female during reproduction.
1
Main arthropod body regions?
Crayfish/spiders: cephalothorax and abdomen
1
Grasshopper class?:max_bytes(150000):strip_icc()/GettyImages-155095890-58324eff3df78c6f6a97fa76.jpg)
Class Insecta
1
Crayfish class?
Class Crustacea.
1
What are spiracles and function of them?
Small openings on the sides of an insect’s body and they let air enter and leave the body for breathing.
1
What is the ovipositor?
Female egg-laying structure.
1
How are male and female swimmerets different?
-In females -> swimmerets are flexible/longer than in males