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What Phylum does sea lilies, sea stars, brittle stars, sea urchins, sand dollars, sea cucumbers belong to?
What Phylum do lancelets and tunicates belong to?
Phylum Chordata is made up of the Subphylums _________ and _______?
In Echinoderms they are ___blastic, _____mate, blastopore becomes ___?
Triploblastic, Coelomate, anus
Fossils suggest that the ancestral deuterstomes had _______ symmetry, _________, and ____?
Bilateral, Segmentation, Gills
_______ are aquatic, worm like bottom dwellers, most are sessile, contain a coelomate, complete gut?
Echinodermatas have ___________ radial symmetry? ________ derived (re-evolved)?
Larval stages of Echinodermata are often ________ symmetry?
Digestive system of and Echinodermata:
Mouth on ____ side?
anus on ____ side?
_______ ____ in arms?
Ventral; dorsal; pyloric ceca
Nervous System in Echinodermata:
No ___ or ____?
Few specialized _____ organs?
head or brain; sensory
Echinodermata have _____ sexes and the larvae are ____-____?
Sea lilies have __ arms with many branches, no ____, no _____________ and are _______ feeders?
5; no spines; no pedicellariae; sessile filter feeders
What are Pedicellariae?
Pincher-like organs that keep parasites and other animals off epidermis
Sea Stars have an ____skeleton made of _________ plates and ____ on surface? And _______ groove on ventral side of arms?
Endoskeleton; calcareous; spines; ambulacral
Sea stars have a ______ ______ system?
Water Vascular System
Sea stars are ______? and can ____ their stomach to eat prey?
Brittle stars are the _____ group of echinodermata, ____ tube feet, arms composed of ____ plates, they are _____, Browsers or ____ feeders?
largest; no tube feet; jointed hard plates; secretive; suspension feeders
Sea urchins (hedgehog) have an ____skeleton, no ___, ____ feet, have long ____ for ___________?
Endoskeleton; no arms; tube feet; long spines for locomotion.
_______ _______ is a unique chewing device in sea urchins?
Sea cucumbers defense mechanisms is the explosion of _____ and evisceration of ______ ____ and ____?
tubules; digestive track and gonads
Sea cucumbers have no centralization of organs=____________?
Phylum Chordata has ______stome development, is ____blastic, has a _____mate, ______ symmetry? Have segmented muscles=_____________? Have an area of centralized organs=_________?
Deuterostome, triploblastic, Coelomate, Bilateral symmetry, Metamerization, Cephalization.
Phylum Chordata has complete ______(food), ______(sensory), and ______ (heart) systems?
Digestive, nervous and circulatory
What are the four key features of Chordata?
- 1. Notochord
- 2. Dorsal hollow nerve cord
- 3. Pharyngeal pouches of slits
- 4. Post-anal tail
What is the Notochord? What is its function?
- 1. Stiff rod of fluid filled cells enclosed in a sheath running the axis of the body
- 2. Provided skeletal support
What is the Pharynx? What is its function?
- 1. part of the digestive track behind the mouth
- 2. Functions in filter feeding or gas exchange.
Which DOES belong to the Phylum Chordata, Hemichordate or Urochordate?
What do the Pharyngeal pouches or slits become?
What does the Hollow Dorsal Nerve cord become in humans?
Lancelets belong to what subphylum?
Tunicate and sea squirts belong to what subphylum?
Tunicates are _____ (movement) marine organisms as adults , their sex is ______________, ____ feeders, contain all ____ features?
Sessile; Hermaphorditic; filter feeders; all four