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Lab 13/ Kingdom Animalia: Phylum Echinodermata was (Vocab of starfish…
Lab 13/ Kingdom Animalia:
Phylum Echinodermata
was
Phylum Echinodermata
Examples
Sand dollars
Starfish
Sea cucumber
Sea lilies
Sea urchins
Brittle-stars
Symmetry
Radial symmetry
Phylum Echinodermata
Not fast movers; some rarely move at all, attached to other living organisms
echinodermata
= "spiny-skinned"
central disk, arms around it
Bilateral symmetry
the left and right halves of the body are symmetrical
EX; Crayfish
Characteristics of
Phylum Echinodermata
Water Vascular system:
Madreporite
= allows them to communicate with their environment by means of a calcerous sieve
Water Vascular System function
to keep water pressure equalized and helps in movement and feeding
Endoskeleton
Hard spines
Rudimentary nervous system
Complete digestive tract, but an open circulatory system
Vocab of starfish
Ambulacral groove
Tube Feet
Oral Surface
Where the mouth is / Starfish eats by
stomach evisceration
, and
surrounding its food
.
Cardiac Stomach
Madreporite
Can only see it from the aboral view
Digestive glands
Aboral Sorface
Pair of Gonads
Ambulacral ridge
Ampulla
Ring canal
Radial canals
