Identify classes Flashcards

1
Q

What class has arms extending from the central disc, tube feet with suckers, anus and madreporite aboral, pedicellariae present

A

Asteroidea

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2
Q

What class is more or less globular or disc shaped, no arms, movable spines, tube feet with suckers, pedicellariae present

A

Echinoidea

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3
Q

What class has no arms, spines absent; microscopic plates embedded in thick, muscular, body wall; anus present, tube feet with suckers, circumoral tentacles (modified tube feet), pedicellariae absent

A

Holothuroidea

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4
Q

What class has arms sharply marked off from central disc; tube feet without suckers and not used for locomotion, anus & pedicellariae absent

A

Ophiuroidea

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5
Q

What class has five arms branching at base, tentacle-like tube feet for food gathering; spine & pedicellariae absent

A

Crinoidea

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