BIOLOGY

46. Which animal phylum is characterized by a lack of symmetry (asymmetrical), and a “skeleton” composed of spicules and sometimes a protein called spongin?

a) Cnidaria.

b) Annelida.

c) Chordata

d) Porifera.

e) Mollusca

47. Corals, sea anemones, and jellyfish are members of which phylum?

a) Porifera.

b) Cnidaria.

c) Annelida.

d) Chordata

e) Mollusca

48. A jellyfish has what type of body form?

a) Medusa.

b) Polyp.

49. Which of the following lacks a digestive tract?

a) A shark.

b) A tapeworm.

c) A snail.

d) An earthworm.

50. The parasitic worms, TrichinellaEnterobius (pinworms), and Ascaris are all members of what animal phylum?

a) Annelida.

b) Arthropoda.

c) Nematoda.

d) Platyhelminthes.

e) Mollusca.

51. Which statement is not true of a tapeworm?

a) The scolex has suckers and hooks that attach the worm to the intestinal lining.

b) It is in the Phylum Platyhelminthes.

c) It is more closely related to an earthworm than it is to a fluke (trematode).

d) Proglottids are reproductive units.

e) To rid oneself of a tapeworm the scolex must be destroyed or dislodged and evacuated from the intestine.

52. Members of what animal phylum lack segmentation and have a radula, mantle, visceral mass, and muscular foot?

a) Platyhelminthes.

b) Arthropoda.

c) Annelida.

d) Mollusca.

e) Chordata.

53. Which term best describes a crab or lobster?

a) Gastropoda.

b) Polychaete.

c) Arachnid.

d) Crustacean.

e) Reptile.

54. Which statement is not true of endothermic animals?

a) They regulate body temperature through behavioral mechanisms–moving into the sun or shade as needed.

b) They are considered “warm blooded”.

c) They regulate their body temperature by physiological mechanisms–shivering, sweat, etc.

d) Humans and other mammals are endothermic.

55. Which of the following is not in the phylum Chordata?

a) Amphibia.

b) Reptila.

c) Osteichthyes.

d) Cephalopoda.

e) Aves.

56. Members of which animal phylum have a true coelom (body cavity)?

a) Porifera.

b) Echinoderms.

c) Cnidaria.

d) Ctenophores.

57. Which of the following is not in the phylum Arthropoda?

a) Insect.

b) Crab.

c) Clam.

d) Spider.

e) Scorpion.

58. Insects belong to which animal Phylum?

a) Echinodermata.

b) Annelida.

c) Arthropoda.

d) Reptilia.

e) Chordata.

59. To which of the following is a salamander most closely related?

a) Lizard.

b) Snake.

c) Shark.

d) Toad.

e) Mole.

60. Vertebrates are most closely related to:

a) Cephalopods.

b) Tunicates/Sea squirts.

c) Insects.

d) Earthworms.

e) Jellyfish.

61. What is not true of deuterostomates?

a) The mouth forms from the blastopore.

b) Triploblastic.

c) Open digestive system.

d) Eucoelomic.

e) Mark e if all statements are true.

62. What is a snake’s closest relative?

a) Tuatara.

b) Turtle.

c) Salamander.

d) Crocodile.

e) Lizard.

63. Which of the following is not considered a Chelicerate?

a) Ticks.

b) Spiders.

c) Lobsters.

d) Scorpions.

64. Which statement is not true?

a) Birds and mammals are ectothermic.

b) Australia separated from Pangaea before true placentals (eutherians) evolved.

c) Dogs, cats, and bears are all members of the Order Carnivora.

d) Bats are members of the Order Chiroptera.

65. Which statement is not true?

a) Fish, birds, reptiles, amphibians, and mammals are all members of the Subphylum Vertebrata.

b) Reptiles, birds, and some mammals produce amniote eggs.

c) Reptiles are better adapted for life on land than amphibians.

d) Whales are members of the mammalian Order Cetacea.

e) Mark e if all statements are true.

1. Consider the following hypothetical population and compute the statistical measures below: #births = 50,000; #deaths = 10,000; #immigrants = 5,000; #emigrants = 20,000; mid-year population = 1,000,000. Show formulas and all relevant work. (12pts)

BR =
DR =
APGR =
DT =
Adjusted (True) Growth Rate =
Adjusted (True) Doubling Time =

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