Phylum Echinodermata Flashcards
Phylum Echinodermata are found in which environment
Marine environments
How does the Phylum Echinodermata have a unique circulatory system?
- Lack a true heart
- Blood and fluid is pumped by water vascular system
Describe the overall structure of Echinodermata?
Ring canal with extending radial canals
Echinodermata have madreporite, which are found
On top of the body for water regulation within the vascular system
What do the madreporite allow for?
Water to be filtered into the system
How is the symmetry displayed by Echinodermata?
Bilateral during the larval stage but radial during the adult stage
How many tissues to Echinodermata have?
Three, making them triploblasts
What is the level of organization displayed by Echinodermata?
Organ-level
Do Echinodermata have a coelom?
Yes
What is the function of tube feet?
- Locomotion
- Gather food
- Respiration
What are the Sense organs?
Poorly developed:
Tactile organs, chemoreceptors, terminal tentacles
Reproduction can be asexual or sexual but fertilization occurs
Externally
What is the Water vascular system?
Network of canals that circulates seawater and body fluids
What operates the Tube Feet?
Water vascular system
Echinodermata have a nervous system but
Lack brain + other sensory organs
