Unit #5 Exam Review Quiz

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

2. 1 Which of the following is NOT an evolutionary innovation found in gastropods: A The shell & many posterior tissues turn 180 degrees during embryonic development. B The nervous tissues are gathered together in the formation of a brain & ganglia, as well as the mouth & other sensory tissues gather together in the anterior portion of the animal. C The foot of the gastropod became elongated & covered in hooks & suction cups in order to strongly grasp its prey. D The shell of the gastropod changed from a planospiral shape to an asymmetrical shape in order to better distribute the weight of the shell.

3. b 2 In the following picture, which represents the anterior portion of the organism: B C D A

4. 3 Tube feet found within an echinoderm are responsible for all of the following EXCEPT: A Absorbing dissolved oxygen B Locomotion C Digestion D Feeding

5. 4 Which of the following is a cephalopod that has an external shell: A Snail B Nautilus C Squid D Octopus

6. 5 Sea 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

7. 6 All of the following can be found on the anterior portion of a gastropod, EXCEPT: A spire B operculum C body whorl D aperture

8. 7 What chemical makes up the endoskeleton of echinoderms? A Calcium carbonate B spongin C spicules D chitin

9. 8 You reach into a tank and poke a brittle star fish. It responds by quickly moving under a nearby rock and curling into a ball. The brittle star responded to your touch because of which of the following receptors: A Photoreceptor B Chemoreceptor C Statocyst D Thigmoreceptor

10. 9 An herbivorous gastropod would most likely use ________ while feeding. A a beak B a poisonous harpoon (modified radula) C a radula D heavily ciliated gills

11. 10 The hypothetical ancestral mollusk is best defined as: A A hypothetical primitive ancestor that has characteristics found in most modern mollusks B A hypothetical modern ancestor that has characteristics found in most modern mollusks C The newest known mollusk D The oldest known mollusk

12. 11 All of the following are correct translations of root terms, EXCEPT: A Arthropod = joint foot B Gastropod = stomach foot C Bivalve = two shell D Echinoderm = smooth skin

13. 12 The animal in the following picture represents ____________. A asymmetry B radial symmetry C bilateral symmetry D hexamerism

14. 13 All of the following are true about torsion & the shell of a modern 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

15. 14 Crustaceans can be found in which of the following phyla: A mollusk B echinoderm C arthropod D cnidarian b

16. 15 What compound makes up the exoskeleton of arthropods? A calcium carbonate B spongin C spicules D chitin

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

18. 17 The following image represents which type of symmetry: A radial B asymmetry C bilateral D hexamerism

19. 18 Torsion is a major evolutionary innovation found within gastropods. Which of the following is a disadvantage of torsion: A The head of the gastropod can retract quickly into the shell B The end of the digestive tract becomes anterior C The gills become anterior D Olfactory senses become anterior

20. 19 Approximately what percentage of all known animal species are considered Arthropods. A 98% B 85% C 55% D 15%

21. 20 Why 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

22. 21 Which of the following tissues helps in surviving trauma that is associated with living in an intertidal zone: A coelom B columella C a planospiral shell D gills that can also function in feeding

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

24. 23 Which of the following represents the aperture: A B C D

25. 24 All of the following are true when considering bivalves EXCEPT: A Bivalves lack cephalization B Adductor muscles are responsible for keeping bivalves tightly shut C Bivalves use a modified radula to gather food quickly during the few instances that the shell is open D Each individual bivalve is definitively male or female & must undergo sexual reproduction

26. 25 Which 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

27. 26 Which 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

28. 27 A bivalve uses ________ to consume/capture food. A a beak B a poisonous harpoon (modified radula) C a radula D heavily ciliated gills

29. 28 The operculum plays an important role for gastropods in that: A The operculum is responsible for the majority of gas exchange within gastropods B The operculum seals the shell of a gastropod shut when it retreats into its shell C The operculum helps guide the formation of the columella, but if it is damaged the shell will begin to make smaller and smaller whorls D The operculum helps raise the eyes above the shell so that the gastropod can see almost 360 degrees

30. 29 The animal in the following pictures represents ___________. A asymmetry B radial symmetry C bilateral symmetry D hexamerism

31. 30 Sea stars have ocelli: A located at the very center of the organism on the dorsal side B located at the terminal end of each arm C located at the very center of the organism on the ventral side D located at the temrinal end of the largest & most dominant arm

32. 31 Which of the following would be best used to detect a deleterious chemical in the water: A B B A C D C D

33. 32 You reach your arm into a tank containing a sea urchin & move your hand close to the animal. While your hand is several inches away from the urchin, it begins to wave its spines erratically. The urchin detected the your presence via: A Chemreceptor B Thigmoreceptor C Statocyst D Photoreceptor

34. 33 Which of the following phyla has a species that is fully terrestrial: A echinoderm B arthropod C mollusk D porifera

35. 34 Which of the following has the most highly developed sensory tissues: A a crab B an octopus C a sea star D a sea urchin

36. 35 Approximately 95% of the water that flows through a bivalve is used for feeding. This is because: A bivalves lack a radula B bivalves have an open circulatory system C bivalves have adductor muscles keeping their shells tightly closed D bivalves are often prey of echinoderms

37. 36 Which of the following parts of a gastropod shell is responsible for preventing cuts and abrasions while the organism moves in and out of its shell: A spire B operculum C columella D nacreous layer

38. 37 Which of the following is UNTRUE when considering cephalopods: A most lack a shell B they are active swimmers C cephalopods have an open circulatory system D cephalopods are active predators

39. 38 Which of the following is NOT a decapod: B A C D

40. 39 The walking legs of a crustacean can be found on the _________ portion of the organism: A anterior B posterior C dorsal D ventral

41. 40 While you are fishing you reel in a large lobster. Being a very good aquatic science student, you know its breeding season for these lobsters & you want to make sure that you don't remove a pregnant female from the environment. Which body tissue should you inspect to determine the gender of the lobster: A The mandibles B The cephalothorax C The swimmerets D It doesn't matter because you know that lobsters are hermaphrodites