Phylum Echinodermata Flashcards
Echinodermata means?
spiny skin
Phylum Echinodermata are…
animals with five-point radial symmetry
habitat of animals under Phylum Echinodermata
exclusively marine
what is the larval stage called in animals under Phylum Echinodermata?
thromboform
The symmetry of animals under Phylum Echinodermata is _______ in adults and ________ in larvae.
radial and bilateral
the shape of their body
flat, star-like, sphere, elongated
bodies are…
not segmented
Animals under Phylum Echinodermata have _____ as a locomotory organ but they do not have a _______.
tube feet; brain
a perforated plate by which the entry of seawater into the vascular system of an echinoderm is controlled
madreporite
direction:
mouth _____
anus ______
ventral and dorsal
groove or furrow bordered by large spines extending along the oral surface of each arm of sea stars
ambulacral groove (Echinodermata: Asteroidea)
two to four rows of small tubular projections
feet or podia
respiration
papule, gills or clocal respiratory tree
sex of animals under Phylum Echinodermata
dioecious
reproduction
Sexual: by gametic fusion/fertilization
Asexual: regeneration/fragmentation
