1. Unit #5 Quiz #5 Grade: «grade» Subject: Aquatic Science Date: «date»

2. 1If the tissue making up the radula of a gastropod was lost, which of the following would most likely occur. A Food consumption would decrease B The gastropod would move much more slowly due to a loss of muscular tissue C The shell would become weaker due to a lack of calcium D The vision of the gastropod would decrease due to a reduction of vitamin K

3. 2The terminal end of the excretory system found within most mollusks is located on the: A Ventral portion B Posterior portion C Dorsal postion D Anterior portion

4. 3The animal in the following picture represents ____________. A asymmetry B radial symmetry C bilateral symmetry D hexamerism

5. 4Sea stars will flex their arms in opposing directions during the process of righting themselves if they get flipped upside down. This ability to sense being upside-down suggests they have: A Chemoreceptors B Statocysts C Photoreceptors D Thigmoreceptors

6. 5Which of the following is used to dig holes in the substrate to make shelter/defend itself from predators A B C D

7. 6Arthropods are most vulnerable when A eating B digesting C molting D carrying eggs

8. 7The gills of a mollusk serve what two purposes: A respiration & defense B filter feeding & respiration C defense & movement D filter feeding & sensory

9. 8Why do sea urchins have the longest tube feet of all echinoderms? A They use these long tube feet to open the shells of the strongest bivalves B The need the long tube feet to reach food from their most anterior end to their most posterior end to feed C They need long tube feet to reach beyond or between their protective spines D They use these long tube feet to help open and close their shell- crushing teeth

10. 9Which of the following would be best used to detect a deleterious chemical in the water: A B C D A B C D

11. 10The root terms for gastro-pod mean: A joint foot B head foot C stomach foot D two shell

12. 11Which of the following would be most important for the survival of a snail if it were to be attacked by a crab: A columolla B spire C aperture D operculum

13. 12All of the following are true about torsion & the shell of a snail EXCEPT: A a negative side effect is fouling B the organism can acheive better weight distrabution C the organism becomes asymmetrical D the shell became more straightened with reduced whorls

14. 13All of the following are true about the differences between crabs and shrimp EXCEPT: A Relatively, crabs have a larger cephalothorax B The antenna of shrimp, especially banded coral shrimp, are much longer than those of crabs C The telson of a shrimp is used for escape, where as most crab do not have a significant telson D Relatively, the abdomen of crabs are much larger and more ventral than those of shrimp

15. 14All of the following can be found on the anterior portion of a gastropod, EXCEPT: A spire B operculum C body whorl D aperture

16. 15 Approximately what percentage of all known animal species are considered Arthropods. A 98% B 85% C 55% D 15%

17. 16Which of the following is used to make a quick escape & fling substrate at a threat: A B C D

18. 17The animal in the following pictures represents _________. A asymmetry B radial symmetry C bilateral symmetry D hexamerism

19. 18 What compound makes up the exoskeleton of arthropods? A calcium carbonate B spongin C spicules D chitin

20. 19Echinoderms can reproduce in all of the following ways EXCEPT: A Hermaphroditic reproduction B Asexual reproduction C Sexual reproduction D Regeneration

21. 20Which of the following echinoderms have external tissue that are representative of primitive gills: A Sea urchin B Serpent sea tar C Sand crabs D Sea cucumber

22. 21The visceral mass contains: A The radula and the foot B The nervous tissue responsible for cephalization C The cells that secrete the shell D The internal organs

23. 22The animal in the following pictures represents ___________. A asymmetry B radial symmetry C bilateral symmetry D hexamerism

24. 23Tube feet found within an echinoderm are responsible for all of the following EXCEPT: A Absorbing dissolved oxygen B Locomotion C Digestion D Feeding

25. 24What chemical makes up the endoskeleton of echinoderms? A Calcium carbonate B spongin C spicules D chitin

26. 25Which of the following would be used by crustaceans to detect nearby water movement and movement within the sand? A Swimmerets B Tactile hairs C Mandibles D Walking Legs