Arthropoda & echinodermata notes
- 2. Most successful animals on Earth…
Over 75% of all animals are arthropods!
Have bilateral symmetry with 3 tissue layers and
organs/systems
- 3. They have a true coelom type of body cavity
with a mouth and anus
They eat everything!
They reproduce sexually
- 8. Has a nervous system with brain and nerve
cords
Has an open-circulatory system with heart and
arteries but no veins
- 9. Named for their jointed appendages
Hard exoskeleton for protection; most must
molt to grow