chap 31 Deuterosomes

chap 31 Deuterosomes - Name: _ Class: _ Date: _ ID: A Chap...

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Name: ________________________ Class: ___________________ Date: __________ ID: A 1 Chap 31 Deuterosomes Multiple Choice Identify the choice that best completes the statement or answers the question. ____ 1. Deuterostomes are characterized by __________ and __________ cleavage. a. radial; determinate b. radial; indeterminate c. spiral; determinate d. spiral; indeterminate e. None of these. ____ 2. Deuterostomes evolved during the: a. Cambrian. b. Proterozoic. c. Paleozoic. d. Cenozoic. e. Devonian. ____ 3. Echinoderms are unusual invertebrates as they have: a. an endoskeleton. b. pentaradial symmetry. c. a water vascular system. d. pedicellariae present in some classes. e. All of these. ____ 4. All Echinodermata are found: a. in marine habitats. b. in freshwater. c. on land. d. on the bottom of the ocean or lakes. e. in shallow ocean waters. ____ 5. Class __________ includes mostly extinct species and a few extant species such as feather stars and sea lilies. a. Asteroidea b. Holothuroidea c. Ophiuroidea d. Echinoidea e. Crinoidea ____ 6. The most unique feature of the echinoderms is their: a. digestive system. b. nervous system. c. closed circulatory system. d. water vascular system. e. mantle.
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Name: ________________________ ID: A 2 ____ 7. Echinoderms are unique because: a. the larvae are radially symmetrical and the adult is bilaterally symmetrical. b. the adults and larva are both pentaradially symmetrical. c. the adult and larva are both radially symmetrical. d. the adult and larva are both biradially symmetrical. e. their larvae are bilaterally symmetrical while the adult is pentaradially symmetrical. ____ 8. Sea stars are primarily: a. herbivores. b. omnivores. c. carnivores. d. detritivores. e. saprophytes. ____ 9. Sea stars eat: a. large fish. b. mostly algae. c. sea weed. d. mostly bivalves. e. debris on the bottom. ____ 10. Which class of echinoderms has the greatest species diversity? a. Asteroidea b. Holothuroidea c. Ophiuroidea d. Echinoidea e. Crinoidea ____ 11. Prominent spines are found on __________ of the phylum Echinodermata. a. Ophiuroidea b. Echinoidea c. Asteroidea d. Concentricycloidea e. Holothuroidea ____ 12. One characteristic of the class Holothuroidea is: a. that most are predators that consume partially digested prey. b. that most of the species are extinct. c. that they have a reduced endoskeleton consisting of microscopic plates embedded in the body wall. d. that moveable spines are used to facilitate locomotion. e. that they have a distinct central disk with very long, slender arms. ____ 13. Sea cucumbers will __________ when environmental conditions deteriorate. a. eject their digestive tract, respiratory structures, and gonads. b.
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This note was uploaded on 10/27/2011 for the course BIO 101 taught by Professor Martin during the Spring '08 term at Rutgers.

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chap 31 Deuterosomes - Name: _ Class: _ Date: _ ID: A Chap...

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