Arthropods - Arachnids Flashcards
What are the 4 subphyla within the Arthropods - Give 1 example in each
Chelicerata - spiders
Hexapoda - Grasshopper
Myriapoda - centipede
Crustacea - Crab
Describe the open circulatory system in Arachnids
Filled with haemolymph that is transported around the haemocoel
What is the exoskeleton made up of
Chitin and protein
What are the 2 main body parts called
Cephalothroax and abdomen
What are the 6 pairs of appendages and what is their function
4 pairs of walking legs
A pair of chelicerae - venomous fangs
A pair of pedipalps - copulation
Name the spinning organs and their placement
Spinnerets - outside
Silk glands - inside
Where is the gonopore and what is its function
Exit for eggs, ventral side of abdomen
How do Arachnida detect vibration
Chaetae
Name the special compound in the eyes and the term for the simple eyes
Ommatidia and ocelli
What is the term for the respiratory organ
Book lung
How are larvae dispersed
Air currents
Outline the excretory system
Metanephridia have malipighian tubes which absorb waste material and turn it into excreta
Hermaphroditic or dioecious?
Dioecious
What order do ticks and mites belong to
Acari
What organ causes lyme disease
Spirochete
