Team 1
What kind of skeleton do echinoderms have?
spiny endoskeleton
Animals with spinal cords, including humans, are _________
chordates
What kind of development do echinoderms have?
Deutrostome
Mouth is located on the ______ surface of the sea star
lower or ventral
Mention 2 functions of pedicellariae
catching food and in removing foreign materials from the skin
How do sea cucumbers respire?
respiratory trees
__________ system of fluid-filled, closed tubes that work together to enable echinoderms to move and get food.
water vascular system
The opening to the water-vascular system is called
madreporite
Identify 1 main difference between larva and adult echinoderm
Echinoderms have radial symmetry as adults.
Larvae have bilateral symmetry
What are the functions of the tube feet?
movement, food collection, and respiration.
How do sea stars digest their food?
pushing their stomach out of their body
Circulation takes place in the ________ and the ___________
body coelom and water vascular system.
What kinds of neurons do Echinoderms have?
both sensory and motor neurons
Why many echinoderms need to sense the direction of gravity?
to return to an upright position after being overturned by a wave or current.
what characteristics place sea daisies in the phylum Echinodermata?
tube feet, radial symmetry
Explain how some echinoderms can harm marine ecosystems
coral reefs are destroyed
What is the name of the digestive system of the sea urchin?
Aristotle's lantern
Estimate the benefits of echinoderm to the environment and other organisms
source of food
bioturbators
Compare and contrast the locomotion of sea stars and brittle stars.
Brittle stars use their tube feet and their arms in snakelike movements for locomotion
Sea stars use their arms and tube feet for crawling
Analyze how brittle stars are different from sea stars
brittle star’s arms are thin and very flexible.
They do not have suckers on their tube feet,
Explain how the endoskeleton of a sand dollar differs from the endoskeleton of other echinoderms
compact body enclosed in a hard endoskeleton, called a test, that looks like a shell
Compare and contrast the feeding of sea urchins and sand dollars
Sea urchins also can be herbivorous grazers, scraping algae from rocks, while sand dollars filter organic particles from the sand in which they are partially buried.
List examples of echinoderm strategies for coping with potential predators
sea stars detach an arm
sea cucumbers release their internal organs