Stars in the Sea
The body plan of echinoderms
5-part radial symmetry
The endoskeleton of a sea urchin is called a ___.
Test
These animals are called vacuum cleaners of the sea because their diet consists primarily of ____.
Detritus
This sea star is considered a pest due to its voracious diet of corals
COTS
The Pisaster sea star is considered this type of species in Pacific mussel beds
Keystone species
Sea stars can reproduce asexually via ____.
Regeneration
Sea urchins scrape algae with this five-toothed mouth structure.
Aristotle's Lantern
Sea cucumbers display this behavior when threatened by predators
Release of its digestive organs which it then regenerates
The most abundant echinoderms in terms of # and species
Brittle stars
The name given to areas that was once kelp forest
Urchin barrens
Climate change has wreaked havoc on sea star populations. Warming waters may have contributed to the prevalence of this virus.
Sea Star Wasting Disease
This part of an urchin is considered a culinary delicacy
Gonads
Structure through which sea cucumbers breathe
Respiratory tree
Brittle stars are named for this method of evading predators
Breaking off its arms to escape. Like sea stars, the arms can regenerate
The name given to them warming trend of the Pacific
The Blob
Water enters the vascular system through this
Sieve plate or madreporite
Sea urchins move in these two ways.
Using their tube feet and spines
The class sea cucumbers are in
Class Holothuria
These sea stars are atypical of their species since they prey on other sea stars and even eat members of their own species
Sun stars
The loss of this marine mammal led to a trophic cascade increasing the # of urchins
Sea otter
Movement occurs when water enters this ballon-like structure at the top of each tube foot
Ampulla
Much of what we know about this subject has come from studies done on sea urchin development
Embryology
This protein in "sea jerky" is used to treat arthritis
Glucosamine and/or chondroitin
The most ancient group of echinoderms, with upward facing mouths
Crinoids (Feather stars)
In the late 1990s a new ecological trend was noticed in the kelp food web. This species was the apex predator.
Orcas