Phylum Arthropoda Flashcards
___ = joint + ___ = foot
arthron, podos
The most species-diverse phylum in the animal kingdom
Phylum Arthropoda
Definite cephalization (Phylum)
Phylum Arthropoda
Segmented body is divided into functional groups
Tagmata
Subphyla under Phylum Arthropoda
- Subphylum Myriapoda
- Subphylum Hexapoda
- Subphylum Crustacae & Chelicerata
Subphylum Myriapoda number of tagmatas and parts
2 tagmatas; Head and Trunk
Subphylum Hexapoda number of tagmata and parts
3 tagmatas; Head, Thorax, and Abdomen
Subphylum Crustacea and Chelicerata number of tagmatas and parts
2 tagmatas: Cephalothorax and Abdomen
A fusion of head and thorax
Cephalothorax
The cuticle of the species that belongs under Phylum Arthropoda are made up of hard exoskeleton that is mainly composed of a protein called ____ and sometimes _____ _____
chitin, calcium carbonate
the outer, thin later that can harder to increase protective capability
epicuticle
the inner, thick layer that is flexible. It is further divided into 2 layers
Procuticle
2 layers of procuticle
- Exocuticle
- Endocuticle
Secreted before molting
Exocuticle
Secreted after molting
Endocuticle
Process of shedding of the outer covering at the cuticular exoskeleton as the arthropod grows
Molting
The process of molting terminates at the actual shedding of the old exoskeleton
ecdysis
After molting, the arthropod has new but soft exoskeleton. In time, it will (the process of hardening is called ____)
schlerotization
2 types of muscle tissues (Phylum Arthropoda)
- Striated
- Smooth
Abundant inside hollow limbs for rapid movement
Striated
Found in the organs (like in digestive system)
Smooth
Phylum Arthropoda digestive system is ___
complete
Digestive tract divided into ____, ____, and ____
- Foregut
- Midgut
- Hindgut
Phylum Arthropoda different methods of feeding
- Sucking type
- Sponging/Lapping type
- Chewing type
has a long, straw-like proboscis to suck liquid
sucking type
the tip of the proboscis contains grooves that sponges up liquid/semi-liquid food
Sponging/Lapping type
Their mouthparts contain powerful, horizontally cutting mandibles/jaws to cut solid food
Chewing type
Lays eggs
Oviparous
Lays eggs inside body and births larva/young
Ovoviviparous
Gives birth directly to larva/young
Viviparous
type of excretory and osmoregulatory system consisting of branching tubules extending from the alimentary canal
Malpighian tubule system
The blood of arthropods
Hemolymph
Circulatory system of species that belongs to Phylum Arthropoda
Open circulatory system
Claw and horn
Subphylum Chelicerata
Mostly predators and evolved fangs, claws, venom glands, or stingers
Class Arachnida
many feet
subphylum myriapoda
Centipedes (Class)
Class Chilopoda
Millipedes (Class)
Class Diplopoda
Shell or insects of the sea (Subphylum)
Subphylum Crustacae
Larval form of subphylum crustacea
Nauplius
Largest and most diverse class of crustacea
Class Malacostraca
Six feet
Subphylum Hexapoda
True insects. The most diverse and abundant of all groups of arthropods
Class Insecta
