Phylum Arthropoda Flashcards
Arthropods have an exoskeleton made of
Chitin
Arthropods have bodies which can be divided into
- Head
- Thorax
- Abdomen
Arthropods excrete via
Tubules
What are the organs Aquatic arthropods respirate through?
Body Surface + Gills
What are the organs Terrestrial arthropods respirate through?
Trachea or Book Lungs
What kind of symmetry to Arthropods exhibit?
Bilateral
How many tissues to Arthropods possess?
Three, making them triploblasts
Arthropods are coelomates with a Haemocoel. What is a Haemocoel?
Open cavity filled with blood and tissues + organs, acting as the circulatory system
Arthropods maintain a complete digestive tract consisting of
Foregut, midgut + hindgut
What system of organization is exhibited by Arthropods?
Organ-level
What kind of segmentation is exhibited by Arthropods?
Unequal
How is the excretory system in Crustaceans + arachnids?
They have paired organs which open at the base of the appendages
How is the excretory system in other insects?
The have Malpighian tubules which open into the intestine
What allows for insects to breathe outside an aquatic environment?
Tracheal tubes
What kind of lungs do arachnids have?
Book lungs
