Show:
Class Merostomata
Class Pycnogonida
Class Crustacea
Subclasses
Arthropods
100
Horseshoe crab and Eurypterids
What is the two different classes in this Merostomata called?
100
Sea Spiders
What is Pycnogonida also called?
100
Approximately how many species in Crustacea
What is 30,000
100
Over how many species are in Malacostraca
What is 20,000
100
2 body segments
What is how many bodies arthropods have
200
Cephalothorax
What is the head and thorax of the horseshoe crab are fused together by?
200
7000m under water
What is how far Pyconogonida is found under water?
200
Two animals in this class are
What is lobster and crabs
200
Outer hard cuticle which covers and protects the body
What is carapace
200
Includes head, thorax, and abdomen
What is Tagma
300
Telson
What is the spike-like appendage that projects from the rear of their bodies?
300
Pycnogonida is unique because
What is being able to bear multiple gonopores
300
Crustaceans respire via
What is gills
300
In Cirripedia is an example
What is barnacles
300
Exoskeleton is made up of
What is protein chitin
400
Book Gills
What is the flat, leaf-like respirators founds on the abdominal appendages?
400
Special appendages called
What is ovigers
400
Crayfish two part stomach consists of
What is gastric mill and filter of setae
400
Malacostraca feed by
What is filter feeding
400
Arthropods symmetry is
What is bilateral symmetry
500
Chelicerae and pedipalps
What is the first of pair pinchers and second pair of appendages called?
500
Sea Spiders are also called
What is pantopoda
500
Most Crustaceans are
What is dioecious
500
Amount of layers in the Carapace
What is 3 layers
500
Arthropods generally grow by molting their exoskeleton in a process called
What is Ecdysis