Show:
Sea Stars
Sea Urchin
Sea Cucumber
Brittle Stars
Sea Lilies
100
What class do sea stars belong to?
What is Asteroidea?
100
Where does fertilization and development occur in Sea Urchins?
What is externally for both?
100
The name for the ting specs of endoskeleton made of calcium carbonate.
What is ossicles?
100
Describe the movement type in the arms of brittle stars?
Ball and socket joint
100
What are the small feather like structures that increase surface area to obtain more nutrients from the water.
What is the Pinnule?
200
This structure acts as gills for respiration and waste removal via diffusion?
What is papullae?
200
What structure acts as the immune system in sea urchins?
What is the Axial Gland?
200
What is the ecological role of sea cucumbers?
To degrade and recycle nutrients
200
The structure used for excretion and gas exchange in brittle stars.
What is bursae?
200
The three sections of the Sea lily
What is Stem, calyx, and arms
300
What are the small claw-like structures on the outside of star fish that perceive the sense of touch and capture food?
What is pedicellariae
300
What class do sea urchins belong to?
What is Echinoidea?
300
The class sea cucumbers belong to
What is Holothuridea
300
The class brittle stars belong to.
What is Ophiuroidea?
300
The class sea lilies belong to
What is Crinoidea?
400
What are the two ways sea stars can perform asexual reproduction. Describe how each process works.
Fission- Organism is split in half to create two separate individuals. Autonomy- An arm is cut off which then generates a new individual.
400
What is the chewing organ found in sea urchin?
What is Aristotle's Lantern?
400
The five developmental stages of the sea cucumber
What is Zygote, auricularia, doliolaria, pentacularia, adult
400
How are the central discs different in brittle stars from sea stars?
Brittle stars central discs contain all digestive and reproductive organs, while sea stars have digestive and reproductive organs extend out to the arms.
400
What are the four stages of the life cycle for Sea Lilies
What is zygote, vitellaria, juvenile, adult
500
What system allows sea stars to move? Describe how this system works?
Water Vascular System- Takes in water to create pressure, which allows the tube feet to extend and generate movement.
500
What are the five developmental stages of the sea urchin?
What is the zygote, 6-arm pluteus, 8-arm plates, metamorph, adult.
500
What are the two organisms that sea cucumbers have relationships with in the wild. Indicate the the type of relationship as well as how each organism benefits?
Cleaner Shrimp- Symbiotic/Mutualism, Cleaner shrimp get a food source, sea cucumber gets cleaned. Pearl Fish- Commensalism- Pearl Fish get shelter and nutrition, sea cucumber gets no benefits nor is it harmed.
500
What is the term that describes the ability to change sexes during certain points in the life cycle?
What is protandric?
500
How sea lilies and feather stars different from one another?
Sea lilies are attached to a stem, feather stars are free floating.