__________________1. The group of annelids that protect themselves by tufts of poisonous bristles that break off and penetrate the skin of the attacker includes the __?__.

__________________2. An Oligochaeta probably has __?__ separating segments.

__________________3. The castings left by earthworms do not contain __?__.

__________________4. An earthworm becomes shorter when its __?__.

__________________5. Land snails and slugs breathe by means of specially adapted __?__.

__________________7. Hermaphrodite usually undergo __?__ fertilization.

__________________8. __?__ muscles in annelids make the worm skinnier.

__________________9. Trochophore are also seen in the segmented worms, which belongs to the phylum __?__.

__________________10. Many annelids obtain food by extending the _____ through the mouth.

__________________11. Fresh water parasites belonging to the annelids.

__________________12. __?__ leeches either swallow their prey whole or suck out all the soft body parts.

__________________13. During feeding, a leech may swallow up to thirty times its weight in blood. T F

__________________15. Circular vessels that connect the dorsal and ventral vessels in annelids.

__________________16. The feeding organ of an annelid that has many different forms is the __?__.

__________________17. Most annelids reproduce by _____ reproduction.

__________________18. The many segments of an annelid's body are separated by _____.

__________________19. Most annelids "eyes" cannot perceive an object but can detect when a __?__ passes over them.

__________________20. Many __?__ are blood-sucking parasites.

__________________21. Round, wormlike animal that has a long, segmented body is a __?__.

__________________22. A band of thicken, specialized segments of annelids, called __?__ secretes a mucus ring into which egg and sperm are segregated.

__________________23. In annelids, __?__ muscles run from the posterior to the anterior for movement.

__________________24. Class of annelids than includes earworms and tubifex worms.

__________________25. The squiggles of mud left above ground by earthworms are known as _____.

__________________26. A bristly marine worm that has paired appendages on each segment belongs to class __?__.

__________________27. One reason soil deteriorates when poisons are used to kill insects is that useful worms are also killed. T F

__________________28. Most annelids reproduce __?__.

__________________29. Most tube-dwelling annelids have light-sensitive cells that allow the animal to detect shadows of predators passing overhead. T F

__________________30. In annelids, cellular metabolism is removed through the __?__.

__________________31. The first of the following organs through which food travels in an earthworm is the __?__.

__________________32. The close relationship between the annelids and mollusks depends on their _____.

__________________33. Undigested material passes through the intestine and are eliminated through the __?__.

__________________34. A scraping organ used for feeding is a __?__.

__________________35. Many annelids take in oxygen through their __?__.

__________________36. An organism that has both male and female reproductive organs is a hermaphrodite. T F

__________________37. Some leeches penetrate the skin of their host with a strong, muscular _____.

__________________38. Many annelids take in oxygen through their skin. The skin must stay __?__ in order for the gas exchange to occur.

__________________39. In an earthworm, blood moves toward the rear of the worm in the _____ blood vessel.

__________________40. In the following analogy: a word or phrase is missing. Complete the analogy... shell:nematocyst: :chemical::snail:__?__.

__________________41. Place where food is digested.

__________________42. Aquatic annelids often breathe through __?__.

__________________43. The __?__ pumps a mixture of food and soil into the annelids esophagus.

__________________44. Thin protective outside layer secreted by many terrestrial annelids to hold moisture around them.

__________________45. Ocean plankton consists of many very small __?__.

__________________46. The "termites of the sea" are actually __?__.

__________________47. A leech usually attaches itself to its host by the posterior sucker. T F

__________________48. Vessels in annelids that supply blood to internal organs of annelids. __?__.

__________________49. Segmented worm belong to the phylum __?__.

__________________50. A __?__ is an organ of excretion in annelids.

__________________51. The class of annelids characterized by paired appendages on their body segments.

__________________52. The common name is segmented worm, which scientifically is called __?__.

__________________53. Most leeches are organisms that exist as __?__.

__________________54. In parasitic leeches, what body part is used to suck blood from it's host.

__________________55. Leeches are being investigated by doctors because leeches release a special secretion that prevents the host's blood from __?__.

__________________56. In the following analogy: a word or phrase is missing. Complete the analogy... light detection:balance: :ocelli:__?__.

__________________57. In annelids, solid wastes pass out of the body through the __?__.

__________________58. __?__ is that part of an annelid digestive system where food is stored.

__________________59. The annelids include the _____ worms.

__________________60. In the South Pacific, the hundreds of thousands of annelids that swarm at the surface to release their eggs and sperm at the same time are __?__.

__________________61. Tremendous damage is done to wooden boats and docks each year by _____.

__________________62. Location in annelid digestive system where food is ground into smaller pieces.

__________________63. Annelids have which type of circulatory system?

__________________64. In annelids, solid waste is removed through the __?__.

__________________65. By grinding and partially digesting incredible amounts of soil, earthworms speed the return to plants of

__________________66. Annelids characterized by paired, paddlelike appendages and many bristles are _____.

__________________67. Which characteristic do many mollusks and annelids have in common?

__________________68. Many annelid segments are separated by internal walls called __?__.

__________________69. Near the front end of an earthworm, the ring vessels that contract rhythmically are known as __?__.

__________________70. In earthworms, the clitellum __?__.

__________________71. The thin protective coating that an earthworm secretes to guard against drying out is the __?__.

__________________72. Common name for freshwater members of class Hirudinea __?__.

__________________73. Once the skin of a host has been penetrated, a leech sucks blood from the area by using its __?__.

__________________74. Leeches are members of the class __?__.

__________________75. __?__ are usually sessile as adults.

__________________76. In the following analogy: a word or phrase is missing. Complete the analogy... One-part shell:gastropod: :two-part shell:__?__.

__________________77. A class of marine annelids that live in cracks and crevices of coral reefs. __?__.

__________________78. The nervous system of annelids have a __?__ that sits on top of gut.

__________________79. Like many marine annelids, earthworms have __?__.

__________________80. One major class of mollusks is __?__.

__________________81. A mollusk that swims by flapping its broad, muscular foot is probably a __?__.

__________________82. A bristly marine worm that has paired appendages on each segment belong to the class __?__.

__________________83. An oligichaete probably __?__.

__________________84. In earthworms, the clitellum __?__.

__________________85. Which characteristic do many mollusks and annelids have in common __?__.

__________________86. Complete the following analogy. One-part shell:gastropod: :two-part shell

__________________87. Complete the following analogy. cocoon:clitellum::shell

__________________88. Complete the following analogy. shell:snail::nematocyst and chemicals