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Echinoderms and Invertebrate Chordates

Kally

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Across
3.Small pinchers that aid in catching food and in removing foreign materials from the skin.
5.The ________ tail is a structure used primarily for locomotion and is located behind the anus.
7.The phylum with animal who have dorsal tubular nerve chords, notochords, pharyngeal pouches, and postanal tails.
10.A flexible rodlike structure that extends the length of the body.
11._____-_________ is a system of fluid-fillled, closed tubes that work together to enable echinoderms to move and get food.
13.An internal skeleton that provides support and protection and can act as a brace for muscles to pull against
14.The nerve chord is located _______ to the digestive organs.
15.Small, muscular, fluid-filled tubes that end in suction-cup-like structures and are used in movement, food collection, and respiration.
Down
1.The muscular sac at the opposite end of the tube feet.
2.Paired structures that connect the muscular tubes that link the mouth cavity and the esophagus.
4.Animals without spines.
6.The strainer-like opening to the water-vascular system.
8.An amimal whose mouth develops from cells other than those at the opening of the gastrula.
9.The phylum of animals that contains sea urchins and sea cucumbers
12.The symmetry Echinoderms exhibit as adults.

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