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40 Cards in this Set
- Front
- Back
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Echinoderms deuterostome or protostome |
Deuterostome |
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WVS |
Water Vascular system - feeding, moving, respiring in echinoderms |
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Symmetry in echinoderms |
Bilateral in larvae, pentaradial in adult |
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Echinoderms movement |
Pedicellaria |
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Echinoderms respiration |
Dermal branchiae or skin gills, Papula, tube feet (diffusion) |
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Sexes of echinoderms |
Gonochrostic |
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Echinoderms classes |
Ophiuroid Echinoid Crinoid Holothuroid Asteroid |
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Pedicellaria |
Tiny jaws in echinoids and asteroids seen in prac |
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Gills in echinoderms |
Gills surrounded by protective paxillae |
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Asteroid symmetry and number of arms |
Pentamerous, 5 or more |
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Arms of asteroid |
Contain intestine and gonads |
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Asteroid pedicellaria, regeneration |
Present , yes |
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Madreporite in asteroid |
Multiple arms, multiple madreporite |
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Ophioroids |
Brittle stars. |
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Ophiuroid symmetry and arms |
Pentamerous, long slender arms |
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Asteroid loco |
Water Vascular system |
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Water Vascular system |
Used for locomotion, food and wastes transport, respiration. System is composed of canals connecting tube feet. |
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Ophiuroid locomotion |
Not water Vascular system, uses arms |
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Ophiuroid madreporite |
Oral surface |
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Ambulances groove ophiuroid |
Closed |
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Ophiuroid pedicellaria and skin gills |
No |
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Ophiuroid feeding |
Use arms, suspension feeders, scavengers |
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Ophiuroid respiration |
Bursa. Cilia lined sacks |
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Bursa |
Cilia lined sacks for respiration in ophiuroid |
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Echinoid pedicellaria |
Present often with toxins |
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Respiration of echinoids |
Tube feet |
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Number of teeth in echinoids lantern |
5 |
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Urchin environment concerns |
Can wipe out kelp forest |
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Holothuroid |
Sea cucumber. Lacks arms. |
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Endoskeleton of holothuroid |
Tiny ossicle scattered throughout body |
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Holothuroid feeding |
Oral tentacles are modified tube feet. Covered in mucous, brings food to mouth |
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Movement of holothuroid |
Tube feet or muscle contraction |
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Can holothuroid swim |
Half can, some have sails and fins |
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Respiration of holothuroid |
Through anus. Pair of respiratory trees inside, ventilated by muscle contractions of anus and cloaca. |
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Polish vesicle |
Calcareous tube leading to holothuroid madreporite |
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Cuvierian tubules |
Defence system. Tubules at base of tree. Engulf and entangled prey as are very sticky |
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Crinoid pedicellaria |
No |
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Madreporite in crinoid |
No |
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Respiration of crinoid |
Diffusion via tube feet |
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Stupid |
App |
