How can we help?

You can also find more resources in our Help Center.

16 terms

blue sheet Echinoderms

STUDY
PLAY
echinoderms
Sea stars, sea urchins, and sand dollars are _.
marine
Echinoderms are _ animals.
spiny skin, water vascular, tube
All echinoderms have _, a _ system, and _ feet. They also have an endoskeleton or internal skeleton.
five-part radial
Most adult echinoderms show _ symmetry/
deuterostomes
Echinoderms are _. This suggests that echinoderms and vertebrates are closely related.
external fertilization
Echinoderms reproduce by _.
water vascular system
Echinoderms have a system of internal tubes called a _.
The water vascular system is filled with fluid. It carries out vital body function, including respiration, circulation, and movement.
The water vascular system is filled with fluid. It carries out vital body function, including respiration, circulation, and movement.
madreporite
The echinoderm's water vascular system opens to the outside through a structure called a _/
ring canal
In sea stars, the madreporite connects to a _.
five radial canals, tube feet
In sea stars, the madreporite connects to a ring canal. From the ring canal, _ extend along body segments. Attached to each are hundreds of _.
tube foot
A _ works much like a suction cup. Most echinoderms move by using them.
Tube feet provide the main surface for respiration in many species of echinoderms. The water vascular system also functions to circulate materials though the echinoderm.
Tube feet provide the main surface for respiration in many species of echinoderms. The water vascular system also functions to circulate materials though the echinoderm.
oxygen, food, wastes
_, _, and _ are carried by the water vascular system.
capture floating plankton
Some echinoderms use their water vascular system to _.
sea urchins sand dollars, brittle stars, sea cucumbers, sea stars, sea lilies, feather stars
Classes of echinoderms include: _ and _, _, _, _, and _ and _.