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Bio Test 4/21

QuestionAnswer
Which class of echinoderms are unique in that their mouth faces up? Crinoidea
What structure helps sea stars keep the body surface free of foreign objects? pedicellariae
What does the sea cucumber use to sweep up sediment and water? tentacles
In an echinoderm, the structure that operates like a living suction cup is the tube foot
What is the bulblike sac called at the top of tube feet? ampulla
In most species of echinoderms, respiration occurs mainly in the tube feet
Is this organism a protostome or a deuterosome? deuterosome
The skeleton of an echinoderm is an endoskeleton made of calcium carbonate.
The water vascular system of echinoderms is involved with each of the following body functions EXCEPT reproduction
In both sea urchins and sand dollars, the internal organs are enclosed within a fused, rigid endoskeleton called a test
Invertebrate chordates are so named because they have a notochord but no backbone
Chordates are characterized by all of the following EXCEPT radial symmetry
Which of the following characteristics is retained by an adult tunicate? pharyngeal slits
Which of the following is a sessile chordate? tunicate
Chordates and echinoderms are both deuterostomes
Chordate characteristics can be observed in lancelets and tunicates
Created by: elenger
 

 



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