Biology 1402 Exam 2 (Part 2)

1. The phylum that includes snails, clams, oysters, and octopuses is the

Ectoprocta.

Brachiopoda.

Mollusca.

Annelida.

Phoronida.

2. The mollusks include all of the following except

Clams.

Oysters.

Shrimps.

Snails.

Squids.

3. The rasping tongue, the radula, is present in which molluscan group?

Bivalve

Oyster

Clam

Snail

Scallops

4. The nitrogenous waste in mollusks is removed by

Flame cells.

Nephridia.

Malpighian tubules.

Incurrent siphon.

Flagella.

5. Trochophores, the free-swimming larvae of many mollusks, are propelled through the water by

Flagella.

Cilia.

Flame cells.

Nephridia.

The radula.

6. Radula modification allowed all of the following functions in gastropods except

Scraping algae off rocks.

Eating vegetation.

Boring holes in other mollusk shells.

Protecting themselves with nematocysts.

Injecting poison through a harpoon-like structure.

7. The cephalapod mollusks have

A muscular foot.

Tentacles.

Two siphons.

Setae.

Jointed appendages.

8. The partitions that separate the segments of the annelid body are known as

Pseudocoels.

Nephiridia.

Setae.

Septa.

Radula.

9. Annelids possess all of the following except

Muscles to swim, crawl, and burrow.

Ganglia to respond to light and respond to other environmental cues.

Circulatory, excretory, and neural elements in each segment.

Setae in each segment.

Adductor muscles.

10. The evolutionary innovation that first appeared in arthropods and is characteristic of the most successful of all animal groups is that of

Bilateral symmetry.

Coelomic body architecture.

Jointed appendages.

Segmentation.

Three primary types of tissues.

11. The excretory structures of terrestrial arthropods are slender projections from the digestive tract that are attached at the junction of the midgut and hindgut. These are called

Flame cells.

Kidneys and bladders.

Malpighian tubules.

Nephiridia.

Ocelli.

12. Spiders are characterized by all of the following except

They are particularly important as predators of insects and other small animals.

Many use silk webs to catch their prey.

Many display elaborate courtship behavior.

All forms are harmless to humans.

They live in diverse habitats on land and some even in water.

13. The human disease, trichinosis, is contracted through

Walking barefoot in soil containing larvae.

Eating fertilized eggs.

Eating undercooked or raw pork.

Eating raw beef.

None of these.

14. An invertebrate biologist explains to your class that she studies the choanocytes of sponges. You know that choanocytes are

Specialized cells near the osculum of the sponge.

Specialized cells that contain spongin and thus contribute to the sponge's rigid structure.

Specialized cells that eventually form spicules.

Specialized cells that have flagella and function to gather food particles.

Specialized cells from which larval sponges develop.

15. All of the following statements about Cnidaria are correct with the exception of

Cnidarians can have two body forms, polyp and medusa.

Cnidarians are triploblastic, having ectoderm, mesoderm, and endoderm.

Cnidarians have radical symmetry.

Cnidarians do not have circulatory, respiratory, or excretory systems.

Cnidarians have specialized cells called cnidocytes with nematocysts inside.

16. In mollusks, the folds of tissue that arise from the dorsal body wall and enclose a cavity surrounding the visceral mass are called the

Foot.

Mantle.

Nephiridia.

Radula.

Lophophore.

17. Many marine mollusks have distinctive larvae which have their bodies encircled by a row of cilia. These larvae are called

Panulae.

Polyps.

Miracidia.

Zoecia.

Tochophores.

18. Mollusks have all of the following except

Visceral mass covered with a soft epithelium.

Folds enclosing a cavity between themselves and the visceral mass.

Gills or lungs within the mantle.

Individuals secrete a tiny chitinous chamber, zoecium.

The shell consists of a horny outer layer, which is rich in protein.

19. Which of the following organs of cephalopods resemble those of the vertebrates?

Arms

Nephridia

Eyes

Digestive tissues

Foot

20. Each segment of an annelid typically contains bristles of chitin called

Cilia.

Parapodia.

Chaetae.

Leglets.

Setae.

21. The sexual reproduction of earthworms characteristically is

Hermaphroditic but cross-fertilizing.

Hermaphroditic but self-fertilizing.

Normal type between individuals who remain as males and females throughout their life time.

Normal appearing, but individuals change sex periodically.

Normal appearing, but individuals reproduce only once in their lives.

22. Earthworms show all of the following features except

Containing segments with a mouth on the first and the anus on the last.

Containing touch-sensitive and light-sensitive organs in the segments.

Containing fewer setae than in polychaetes.

Containing distinct head regions and parapodia.

Being hermaphroditic.

23. A biologist has been studying a mollusk that does not have a shell. It lives in the marine environment. Of the examples given below, which one did the biologist study?

Clam

Snail

Garden slug

Chiton

Octopus

24. The most successful class of arthropods is

Insecta.

Arachnida.

Crustacea.

Chilopoda.

Merostomata.

25. The passage of an arthropod through stages from egg to adult is

Differentiation.

Evolution.

Graduation.

Metamorphosis.

Succession.

26. Nauplius, a unique kind of larva, is characteristic of

Mites.

Crustaceans.

Horseshoe crabs.

Insects.

Chelicerates.

27.

Chelicerae function as A. eyes. B. fangs or pincers. C. jaws or mandibles. D. teeth.

E. wings.

Eyes.

Fangs or pincers.

Jaws or mandibles.

Teeth.

Wings.

28. Which of the following is not true about crustaceans?

They produce larvae known as nauplius.

They have legs on their abdomen and thorax.

They have two pairs of antennae.

Many have compound eyes.

They have covers called the opercula, posterior to the legs.

29. An invertebrate biologist is conducting research with crabs. Her interest is ecdysis. This implies that she studies

Tagmatization processes in crustaceans.

How ommatidia function individually in a compound eye.

How the HOX gene controls the fusion of the head and thorax into the cephalothorax.

How ocelli evolved from mere photoreceptors to imaging lens.

The molting process

30. The three phyla, Ectoprocta, Brachiopoda, and Phoronida, have which feature in common?

Nephiridia

A lophophore

A radula

Setae

A muscular foot

31. Eyes with single lenses that respond to light and darkness are found in many arthropods; these are the

Compound eyes.

Ocelli.

Apposition eyes.

Ommatidia.

Superpostion segments.

32. Air passage into the trachea of most insects is controlled by the closing and opening of valves, which operate special openings called

Spiracles.

Ocelli.

Ommatidia.

Book lungs.

Malpighian tubules.

33. The class Arachnida includes all of the following except

Dragon flies.

Mites.

Scorpions.

Spiders.

Ticks.

34. These echinoderms have soft, slug-like bodies with tough, leathery skin. They are the

Sea pansies.

Sea lillies.

Sea daisies.

Sea cucumbers.

Sea anemones.

35. Which of the following are not correctly matched?

Spicules—sponges

Nematocyst—cnidaria

Flame cells—flatworms

Stylets—roundworms

Scolex—rotifers

36. The organ that is responsible for secreting cocoons in the oligochaetes is known as the

Nephridia.

Setae.

Radula.

Clitellum.

Lophophore.

37. The functions of the lophophore include all of the following except as a

Surface for gas exchange.

Food-collecting organ.

Means of attachment to the substrate.means of attachment to the substrate.

Rasping tongue.

Location for the tentacles and the anus.

38. Examples of mollusks that live on land are the

Earthworms.

Land crabs.

Mussels.

Scorpions.

Snails and slugs.

39. Which of the following are not found in a bivalve?

Tentacle, radula, and distinctive head

Large wedge-shaped foot

Mantle enveloping the internal organs

Two large adductor muscles

Complex gills

40. The medicinal leech, once used to withdraw "unhealthy" blood from patients, produces which of the following to ensure blood flow from the host?

Antibiotics

Antibodies

Anticoagulant

Blood clots

Suture material

41. All of the following are either structures or characteristics of members of the Class Bivalvia of the Phylum Mollusca except

The mantle.

A radula.

A shell.

Gills.

Open circulation.

42. Select the mismatched pair of Phylum Mollusca classes and their examples.

Polyplacophora—chitons

Gastropoda—slugs

Bivalvia—snails

Cephalopoda—nautilus

Gastropoda—nudibranchs

43. Reproduction in the earthworm involves

Asexual budding.

Self-fertilization.

Cross-fertilization between two dioecious organisms.

Cross-fertilization between two hermaphroditic organisms.

Recombination between opposite mating types.

44. A marine biologist is conducting research on animals that have a lophophore and two calcified shells. Based on this information, this animal this must belong to the phylum

Mollusca.

Phoronida.

Ectoprocta.

Bryopoda.

Brachiopoda.

45. Which class of arthropods contains members with two pairs of antennae and legs on their abdomen and thorax?

Insecta

Arachnida

Crustacea

Chilopoda

Merostomata

46. In some arthropods tagmatization has produced a combination of head and thorax known as a

Cephalothorax.

Fused corpora.

Headless mite.

Larval instar.

Thoracotomy.

47. Spiders and certain other arthropods which lack jaws or mandibles are placed in a subphylum called

Agnathae.

Amandibulata.

Blood suckers.

Chelicerates.

Mandibulates.

48. Oxygen diffuses to the tissues of terrestrial arthropods through the

Arteries.

Cells of the cortex.

Circulatory system.

Lungs.

Trachea and tracheoles.

49. Decapod crustaceans (shrimps, lobsters, and crabs) are characterized by all of the following except

A carapace, a dorsal cephalothorax shield.

A ventral line of appendages, swimmerets.

Flattened uropods form a paddle at the end of the abdomen.

A tail spine, telson.

Chelicerae.

50. Insect sensing of the environment is through all of the following except

Sensory hairs to detect touch.

Tympanal organs to detect sound.

Chemoreceptors to detect pheromones.

Organs of smell in the antennae.

Camera-type eyes.

51. An entomologist has been conducting research on the Malpighian tubules of hornets. He is interested in their function. Which of the following statements about Malpighian tubules is not correct?

Malpighian tubules empty waste into the hindgut.

Malpighian tubules are slender projections from the digestive system.

Malpighian tubules collect and filter body fluids of some arthropods.

Malpighian tubules are a part of the tracheal system used by some arthropods for respiration.

Malpighian tubules allow for reabsorption of needed salts and water.

52. All of the following are characteristics of spiders except

Antennae (1 pair).

Walking legs (4 pair).

Chelicerae (1 pair).

Pedipalps (1 pair).

Cephalothorax and abdomen.

53. A marine biologist makes a presentation about crustaceans to your biology class. He explains that he has recently received an NSF grant to study sessile crustaceans. You are only aware of one group of sessile crustaceans. This crustacean must be

A lobster.

A crayfish.

A shrimp.

A barnacle.

The nauplius.

54. Trichinella nematodes reach muscle tissue, forming resistant cysts, after

Entering the circulatory system following penetration of the skin of the foot.

Entering the circulatory system following penetration of the intestinal wall.

Entering the lymph channels following penetration of the intestine.

Entering the lymph channel following penetration of lung tissue.

None of these.

55. Which of the following nematode parasites lives in the lymphatic system of humans where they may cause obstruction resulting in severe swelling called elephantiasis.

Ascaris

Trichinella

Necator

Filaria

Enterobius

56. If you examine a spider and an ant, you notice quickly that they are arthropods but they have different characteristics. Select the incorrect choice of characteristics.

Spiders have a cephalothorax and abdomen; insects have a head, a thorax, and an abdomen.

Spiders and insects have a tracheal respiration system.

Spiders are strictly carnivorous; insects can be carnivorous or herbivorous depending on the species.

Spiders and insects have open circulatory systems.

Spiders do not have wings; many insects do have wings.