Name: ________________________ Biology Chapter 28 Arthropods Practice Test (p. 1 of 10)

1. _______________________ tough external covering of an arthropod

2. _______________________ carbohydrate that, along with proteins, makes up the exoskeleton

3. _______________________ shedding an exoskeleton and manufacturing a larger Replacement

4. _______________________ body system that produces chemical messengers

5. _______________________ part of the body that houses most of the internal organs

6. _______________________ part of the skeleton that covers the cephalothorax

7. _______________________ when organisms are attached to one spot

8. _______________________ pair of mouthparts that contain fangs and are used to stab and paralyze prey

9. _______________________ mouth parts that are longer than the chelicerae and usually modified to grab prey

10. _______________________ organs that contain silk glands and produce silk strands

11. _______________________ changing of shape and form

12. _______________________ immature insect that looks similar to adult form

13. _______________________ immature form that looks and acts different than parents

14. _______________________ specific chemical messengers that affect the behavior or development of other individuals of the same species.

Name: ________________________ Biology Chapter 28 Arthropods Practice Test (p. 2 of 10)

15. Color code the following:

Stomach Madreporite Ring canal Radial canal Ampulla Gonad Mouth Tube Feet Arm Rectum Anus

16. Name the type of body symmetry shown by the animal in the above figure. What features visible in the figure demonstrate this type of symmetry?

17. Describe how the organism uses the structure labeled X. Be specific.

18. What do the madreporite, ring canal, and radial canal have in common?

19. Describe how the tube feet work.

A

B

C

D

E

F

G

H

I

Name: ________________________ Biology Chapter 28 Arthropods Practice Test (p. 3 of 10)

20. Name the three sections of an insect’s body and the two sections of a chelicerate’s body.

21. Identify the respiratory organs used by spiders and by horseshow crabs.

22. The figure shows the development of a ladybug. Identify the stages starting at the left and going to the right.

23. What type of metamorphosis is shown in the figure?

24. List three features that are present in the body plan of arthropods.

Name: ________________________ Biology Chapter 28 Arthropods Practice Test (p. 4 of 10)

25. Label and COLOR the parts of the crawfish

26. Label the parts of the spider.

27. The two creatures pictured above are part of which two groups?

Name: ________________________ Biology Chapter 28 Arthropods Practice Test (p. 5 of 10) Fill in the Blanks

28. In arthropods, ganglia are located along a ventral ______________________________.

29. If an arthropod has two pairs of antennae and two or three body sections, it is classified in the group called ______________________________________.

30. In an echinoderm, oxygen is carried throughout the body by the

______________________ system.

31. A typical primitive arthropod has many identical ____________________________,

each with a pair of appendages.

32. Chelicerae contain _________________________________ that stab and paralyze prey.

33. Insects have ____________________________________ pairs of legs

34. Within a society, particular tasks or roles are performed by groups of individuals called __________________________________________________.

35. __________ The appendages of arthropods are

a. Found only on the head b. Hard and immovable c. Jointed and extend from the body wall d. Divided into six branches

36. __________ The structured labeled X in the figure are filled with

a. Water c. air b. Blood d. nitrogenous waste

37. __________ The structures labeled X are called

a. Tracheal tubes c. book lungs b. Malpighian tubules d. book gills

38. __________ Which of the following habitats do arthropods occupy?

a. The sea c. the air b. The land d. all of the answers

X

Name: ________________________ Biology Chapter 28 Arthropods Practice Test (p. 6 of 10)

39. __________ What does molting enable arthropods to do? a. To breathe c. to grow b. To reproduce d. to eat

40. __________ Arthropods are classified based on the number and structure of their

a. Eyes and wings c. muscles and bones b. Body segments and appendages d. gills and heart

41. __________ Insects are classified as

a. Crustaceans c. uniramians b. Arachnids d. chelicerates

42. __________ How many pairs of legs are there on most body segments of a centipede?

a. One c. five b. Two d. six

43. __________ The compound eyes of insects

a. Are made of many lenses b. Are located on the thorax c. Produce an image that is more detailed than what humans see d. Are not very good at detecting movement

44. _________ The body of an insect is divided into a

a. Head and thorax c. head, thorax, and abdomen b. Head and cephalothorax d. cephalothorax and abdomen

45. __________ Which of the following is NOT a stage of complete metamorphosis?

a. Nymph c. larva b. Egg d. pupa

46. __________ In most ant societies, egg laying is performed by

a. The workers c. hundreds of queens b. One queen d. reproduction of males

47. __________ In echinoderms, body parts usually occur in multiples of

a. Two c. three b. Seven d. five

48. __________ In an echinoderm, the structure that operates like a living suction cup is

a. Madreporite c. stomach b. Tube foot d. nerve ring

Name: ________________________ Biology Chapter 28 Arthropods Practice Test (p. 7 of 10)

49. __________ Which structure is part of an echinoderm’s water vascular system? a. Skin gill c. madreporite b. Anus d. stomach

50. __________ The echinoderms that look like warty, moving pickles are

a. Sea urchins c. sea stars b. Sea cucumbers d. feather stars

51. __________ Two echinoderms that are in the same class are

a. Brittle stars and sea stars c. sea cucumbers and sea urchins b. Sea stars and sea cucumbers d. sea urchins and sand dollars

52. __________ All of the following are true about arthropods EXCEPT that

a. They have a closed circulatory system b. They have an exoskeleton made of chitin c. They include herbivores, carnivores, and omnivores d. They move using muscles controlled by the nervous system

53. __________ An arthropod is vulnerable to predators during the molting period

because a. It must come out of hiding to molt b. Its new exoskeleton is soft c. Molting cannot occur without the assistance of predators d. Predators are more numerous during this period.

54. __________ The function of mandibles is to

a. Bite and grind food b. Sense the environment c. Propel an arthropod when it swims d. Support an arthropod when it walks

55. __________ An example of a chelicerate is a

a. Lobster c. crayfish b. Centipede d. spider

56. __________ Spiders feed by

a. Swallowing their prey whole b. Biting off and swallowing pieces of their prey c. Sucking up prey tissues that have been liquefied by enzymes d. Sipping nectar through a tube-like mouthpart.

Name: ________________________ Biology Chapter 28 Arthropods Practice Test (p. 8 of 10)

57. __________ An insect can detect minute movements in its environment by using its compound eyes and its

a. Malpighian tubules c. chelicerae b. Tracheal tubes d. sensory hairs

58. __________ Which of the following explains why flying has been beneficial to insects?

a. Nymphs can escape most predators. b. Insects can disperse long distances and colonize a variety of habitats. c. Insect societies can communicate without using pheromes. d. The insect body plan can function with only two sections.

59. __________ An example of an insect that undergoes incomplete metamorphosis is the

a. Moth c. beetle b. Bee d. grasshopper

60. __________ Which of the following is NOT true about insect societies?

a. All species use the same “language” of visual and chemical signals. b. Individuals may be specialized to perform particular roles. c. Every individual in a society works for the benefit of the whole group. d. Each caste has a body form specialized for its role.

61. __________ In most species of echinoderms, respiration occurs mainly in the

a. Tube feet c. ring canal b. Madreporite d. radial canals

62. __________ The skeleton of an echinoderm is an

a. Exoskeleton made of calcium carbonate b. Exoskeleton made of chitin c. Endoskeleton made of calcium carbonate d. Endoskeleton made of chitin

63. __________ The water vascular system of echinoderms is involved with each of the

following body functions EXCEPT a. Respiration c. movement b. Circulation d. reproduction

64. __________ In the Great Barrier Reef of Australia, extensive areas of coral have been

destroyed by the crown of thorns, which is a type of a. Sea cucumber c. sea star b. Sea urchin d. sea lily

Name: ________________________ Biology Chapter 28 Arthropods Practice Test (p. 9 of 10)

65. Contrast the body symmetry of echinoderms as larvae and adults

66. Describe the events that take place when an arthropod molts.

67. Describe the external structural differences between spiders and insects.

Name: ________________________ Biology Chapter 28 Arthropods Practice Test (p. 10 of 10)

68. Compare and contrast centipedes and millipedes.

69. Explain how a worker honeybee communicates the location of food that is more than 50 meters from the hive.

70. What will happen if a sea star is pulled into pieces?

ANSWER KEY

1. Exoskeleton 2. Chitin 3. Molting 4. Endocrine system 5. Thorax 6. Carapace 7. Sessile 8. Chelicerae 9. Pedipalps 10. Spinnerets 11. Metamorphosis 12. Nymph 13. Larvae 14. Pheromone 15.

16. Radial symmetry, The arms illustrate radial symmetry 17. The sea star uses its stomach to feed. The sea star pushed its stomach out through its

mouth, pours out enzymes, and digests its food. When the sea star has finished feeding, it pulls its stomach back into its mouth.

18. These are all parts of the water vascular system. 19. When water is pushed into tube feet, they expand. When water is pulled out, the cups on

their ends shrink, creating a partial vacuum that holds them to whatever they are touching, allowing the animal to walk or to pull shells apart when feeding.

20. An insect has a head, abdomen, and thorax. A chelicerate has a cephalothorax and abdomen.

21. Spiders use book lungs and horseshoe crabs use book gills 22. Eggs, larva, pupa, adult 23. Complete metamorphosis 24. A segmented body, tough exoskeleton, and jointed appendages

25.

26.

27. Crustaceans and chelicerate 28. Nerve cord 29. crustaceans 30. pedipalps 31. segments 32. fangs 33. three 34. castes 35. C. jointed and extend from the body wall 36. C. air 37. A. Tracheal tubes 38. D. all of the other answers 39. C. to grow 40. B. boy segments and appendages 41. C. uniramians 42. A. one 43. A. are made of many lenses 44. C. head, thorax, abdomen 45. A. nymph 46. B. one queen 47. D. five 48. B. tube foot 49. C. Madreporite 50. B. sea cucumbers 51. D. sea urchins and sand dollars 52. A. They have a closed circulatory system 53. A. it must come out of hiding to molt 54. A. bite and grind food 55. D. spider 56. C. sucking up prey tissues that have been liquefied

57. D. sensory hairs 58. B. Insects can disperse long distances and colonize a variety of habitats 59. D. praying mantis 60. A. skeleton made of calcium carbonate 61. A. respiration 62. C. sea star 63. D. reproduction 64. C. sea star 65. Echinoderms are bilaterally symmetrical as larvae but radially symmetrical as adults

66. Skin glands digest the inner part of the exoskeleton and other glands secrete a new

skeleton. The animal pulls itself out of what remains of the original skeleton. While the new exoskeleton is still soft, the animal fills with air or fluids to allow room for growth before the next molting.

67. Spiders have two body sections, while insects have three. Spiders have four pairs of legs, while insects have three. Spiders lack antennae, while insects have one pair. Spiders have two pairs of appendages that are used as mouthparts, while insects have three pairs, including a pair of mandibles.

68. Both centipedes and millipedes are uniramians. They both have jaws, one pair of antennae, unbranched appendages, and a highly segmented body. Both live under rocks. Centipedes have one pair of legs on most body segments, whereas millipedes have two pairs. Centipedes eat other animals, whereas millipedes eat dead and decaying plant material.

69. The bee runs forward in a straight line while waggling her abdomen. She then circles around one way, runs in a straight line again, and circles around the other way. The farther away the food is, the longer the bee takes to perform the straight run and the more she waggles. The direction of the straight run indicates the direction of the food.

70. Each piece will grow into a new animal, as long as it contains a portion of the central part of the body.