Home School Life Journal

Home School Life Journal ........... painting by Katie Bergenholtz
"Let us strive to make each moment beautiful."
Saint Francis DeSales

Phylum Arthropoda

The organisms of Phylum Arthropoda (arthro means jointed, poda, leg or foot) all have:
  • an exoskeleton; they shed/molt as the body grows 
  • body segments; head, thorax, abdomen, OR cephalothroax, abdomen 
  • jointed appendages; legs and chelipeds or claws
  • a ventral (on the belly side) nervous system 
  • an open circulatory system; heir blood is pumped upwards within short vessels, then allowed to just wash down over all the their innards instead of being enclosed in veins. 

The Phylum Arthropoda includes:

Class Crustacea or Crustaceans


Crustacean Anatomyfrom Alex's notebook -lift the flap to see internal structure
Subphylum:Crustacea
Class:Malacostraca
Order:Decapoda
Lobsters and Crayfish
The only differences between lobster and crayfish are that crayfish are smaller and live in fresh water as opposed to lobster who live only in salt water.

Isopods

Crabs

Hermit Crabs

Alex's (18 years old, special needs) notebook
A hermit crab doesn't make the shell in which it lives. The shell is made by a snail that has died.
Subphylum:Crustacea
Class:Malacostraca
Order:Decapoda


Shrimp and Triops/Sea Monkeys
Trilobite

Barnacles

Alex's (age 18) Barnacle Pop-Up Page in his notebook.
Subphylum:Crustacea
Class:Maxillopoda
Subclass:Thecostraca

Class Arachnida 

from Quentin's notebook

Subphylum:Chelicerata
Class:Arachnida
Order:Araneae

Class:Arachnida
Subclass:Dromopoda
Order:Opiliones


Classes Chilopoda (centipedes) and Diplopoda (millipedes) 



Alex's page from Nature Portfolio 


from Quentin's notebook
Class:Insecta
Order:Hymenoptera
Suborder:Apocrita
Superfamily:Vespoidea
Family:Formicidae
sources:

1 comment:

  1. Ewwww..... millipedes.....

    Love the lobster and barnacle pages you did, and the hermit crab illustration.

    ReplyDelete

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