INVERTEBRATE REVIEW

1. INVERTEBRATE REVIEW

2. WORMS

3. PORIFERA & CNIDARIA

4. MOLLUSKS

5. ARTHROPODS

6. ECHINODERMS

7. MISC.

8. Arthropods Arthropods Arthropods Arthropods Worms Worms Worms Worms Worms Worms Porifera & Cnidaria Porifera & Cnidaria Porifera & Cnidaria Porifera & Cnidaria Porifera & Cnidaria Porifera & Cnidaria Mollusks Mollusks Mollusks Mollusks Mollusks Echinoderms Echinoderms Echinoderms Misc. Misc. $100 $100 $100 $100 $100 $100 $200 $200 $200 $200 $200 $200 $300 $300 $300 $300 $300 $300 $400 $400 $400 $400 $400 $400 $500 $500 $500 $500 $500 $500

9. In earthworms, inability to produce offspring might be associated with:a) lack of a true coelomb) the inability of a worm to fertilize its own eggsc) a malfunction of the nephridiad) a malfunction of the clitellum

10. d) a malfunction of the clitellum

11. Most Flatworms are small and very thin. Therefore, they can supply their cells with oxygen and remove metabolic wastes by means of:a) simple diffusion between body surface and the environmentb) an open circulatory system without a heartc) an open circulatory system with one heartd) a closed circulatory system with one heart

12. a) simple diffusion between body surface and the environment

13. In annelids, nitrogen-containing wastes are eliminated by:a) clitellab) parapodiac) nephridiad) gills

14. c) nephridia

15. One way to distinguish a roundworm from an annelid is to:a) count their germ layersb) examine their body symmetryc) compare the structure of their body cavitiesd) determine whether they have cephalization

16. a) count their germ layers

17. In the tapeworm, both male and female reproductive organs are contained in each mature:a) scolexb) proglottidc) cystd) egg

18. b) proglottid

19. How do polyps differ from medusas?a) ployps have mesoglea, and medusas do notb) medusas are cylindrical and usually sessile, and polyps are bell-shaped and motilec) medusas are carnivorous, and polyps are notd) polyps are cylindrical and usually sessile, and medusas are bell-shaped and motile

20. d) polyps are cylindrical and usually sessile, and medusas are bell-shaped and motile

21. Which of the following describes the feeding habits of sponges?A) predatorsB) filter feedersc) parasitesd) detritovores

22. B) filter feeders

23. What is the primary body form of Scyphozoans?A) budb) polypc) medusad) gemmule

24. c) medusa

25. Many sponges protect themselves from predators by producinga) larvaeb) choanocytesc) nematocystsd) toxins

26. d) toxins

27. The benefit of a sponge producing gemmules is that gemmulesa) are a form of sexual reproductionb) allow a sponge to survive long periods of harsh conditionsc) defend the sponge against predatorsd) help to filter food for the sponge

28. b) allow a sponge to survive long periods of harsh conditions

29. The tube-like structure through which water enters and leaves a mollusk’s body is the a) sinusb) siphonc) coelomd) mantle cavity

30. b) siphon

31. The most active mollusks are thea) gastropodsb) cephalopodsc) bivalvesd) nudibranchs

32. b) cephalopods

33. A pond snail is an example of a) gastropodb) flatwormc) roundwormd) annelid

34. a) gastropod

35. Daily Double!!

36. The spade-shaped burrowing structure of one group of mollusks and the tentacles of another group are both modifications of thea) footb) mantlec) shelld) visceral mass

37. a) foot

38. Filter-feeding bivlves can be used to monitor the environmental health of a habitat becausea) the bivalves reproduce quickly in polluted waterb) the bivalves concentrate pollutants and microorganisms in their tissuesc) the bivalves live near deep-sea ventsd) some bivalves never get cancer

39. b) the bivalves concentrate pollutants and microorganisms in their tissues

40. Which of the following invertebrates is NOT a crustacean?a) horseshoe crabb) fiddler crabc) barnacled) crayfish

41. a) horseshoe crab

42. Arthropods are classified based on the number and structure of theira) eyes and wingsb) body segments and appendagesc) muscles and bonesd) gills and hearts

43. b) body segments and appendages

44. The appendages of arthropods area) found only on the headb) hard and immovablec) jointed and extend from the body walld) divided into six branches

45. c) jointed and extend from the body wall

46. What does molting enable an arthropod to do?a) to breatheb) to reproducec) to growd) to eat

47. c) to grow

48. Insects are classified asa) crustaceansb) arachnidsc) uniramiansd) chelicerates

49. c) uniramians

50. Two echinoderms that are in the same class area) brittle stars and sea starsb) sea stars and sea cucmbersc) sea cucumbers and sea urchinsd) sea urchins and sand dollars