LAB: Arthropods Flashcards
1
Q
Arthropods
A
- Segmented
- Jointed appendages
- Body segments fused into tagma
- exoskeleton of chitin
- Ecdysis
2
Q
Phylum
A
Arthropoda
3
Q
Trilobites
A
- an early arthropod
- thought to be first arthropod
4
Q
Chelicerates
A
- Horseshoe crabs, spiders, ticks, scorpions
5
Q
Horseshoe crab
A
- Two tagmata:
- Cephalothorax + abdomen
- Chelicerae - 1st pair of feeding appendages
- Pedipalps - 2nd pair of feeding appendages
- No antennae
6
Q
Spiders
A
- chelicerae modified into fangs
7
Q
Ticks
A
- Parasitic chelicerates
- vector of Lyme’s Disease
8
Q
Scorpions
A
- pedipalps modified into pincers
9
Q
Crustaceans
A
- Crabs, shrimp, crayfish and barnacles
10
Q
Myriapods
A
-
Centipedes and millipedes
- predators - herbivores/detritivores
11
Q
Hexapods
A
- Insects
- Most diverse group of arthropods
- 3 Tagmata: Head + Thorax + abdomen
- 3 pair of walking legs
- Wings
- Incomplete metamorphism - larvae resembles adult but is much smaller
- Complete metamorphism - dramatic changes between stages. Ex. butterfly
12
Q
Crayfish ANATOMY
A
