26. A Koala beer is a ______________. a. placental mammal b. eutherian c. monotr
ID: 72534 • Letter: 2
Question
26. A Koala beer is a ______________.
a. placental mammal
b. eutherian
c. monotreme
d. marsupial
27. Which of the following are features of sharks? MARK ALL THAT APPLY.
a. good sense of small
b. ability to detect electrical fields
c. powerful jaws
d. good eyesight
e. ridge skeleton
28. Which of the following are chordate features? MARK ALL THAT APPLY.
a. ventral solid nerve cord
b. notochord
c. pharyngeal slits
d. post anal tail
e. live birth
29. Which animals would be most closely related to a bird and a mammal?
a. a starfish and sea urchin
b. a snail and octopus
c. a crab and centipede
d. an earthworm and leech
e. a tape worm and fluke
30. Leeches and polychaetes are________________.
a. nematodes
b. flatworms
c. annelids
d. mollusks
e. crustaceans
31. Which group has stationary polyp and a free-floating medusa?
a. crustaceans
b. mollusks
c. sponges
d. cnidarians
e. annelids
32. Which group does not have true tissues?
a. crustaceans
b. mollusks
c. sponges
d. cnidarians
e. annelids
33. Which of the following is a hollow ball of cells?
a. gastrula
b. blastula
c. morula
d. zygote
e. larva
34. Which group has a mantle, visceral mass, and radula?
a. crustaceans
b. mollusks
c. sponges
d. cnidarians
e. annelids
35. Schistosomes are______________.
a. annelids
b. mollusks
c. arthropods
d. Platyhelminthes
e. nematodes
36. Two thirds of all identified species are____________.
a. annelids
b. mollusks
c. arthropods
d. Platyhelminthes
e. nematodes
37. When did the first mammals evolve?
a. 100 million years ago
b. 200 million years ago
c. 300 million years ago
d. 400 million years ago
e. 500 million years ago
38. Monotremes are egg laying mammals. The only existing species isan____________
a. opossum
b. tarsiers
c. anteater
d. duck-bill platypus
e. kangaroo
39. What is the oldest known hominin fossil?
a. Australopithecus afarensis
b. Paranthropus boisei
c. Ardipithecus ramidus
d. Homo habilis
e. homo sapiens
40. Which of the following are common primate features? MARK ALL THAT APPLY
a. claws instead of nails
b. enhanced depth perception
c. rigid shoulder joints
d. excellent hand-eye coordination
e. extensive parental care
41. Which types of fish lack jaws? MARK ALL THAT APPLY.
a. lamprey
b. hagfish
c. sharks and rays
d. lobe-finned fish
e. ray-finned fish
42. Other than the lungs, which amphibian organ is involved in gas exchange with the environment?
a. heart
b. liver
c. stomach
d. skin
e. spleen
43. Tunicates and lancets____________. MARK ALL THAT APPLY.
a. are chordates
b. are invertebrates
c. have a skull and cranium
d. share a common chordate ancestor with vertebrates
e. are amniotes
44. Insect wings_____________. MARK ALL THAT APPLY
a. contributed to success of the group
b. are homologous to the wings of birds and bats
c. mare modified parts of the exoskeleton
d. are not true appendages
45. Ticks and mites are_____________. MARK ALL THAT APPLY
a. arthropods
b. insects
c. crustaceans
d. arachnids
e. centipedes
46. Barnacles are_______________________. MARK ALL THAT APPLY
a. arthropods
b. mollusks
c. bivalves
d. arachnids
e. crustaceans
47. Which animals have a single opening to their gastrovascular cavity? MARK ALL THAT APPLY
a. annelids
b. mollusks
c. cnidarians
d. flatworms
e. arthropods
48. What is the significance of the Burgess Shale?
a. it contains many fossils dinosaurs
b. it contains the early human fossils
c. it contains the first mammal species
d. it has variety of Cambrian period fossils that so animal diversification
e. it contains the first land tetrapods
49. What are the stinging cells found on the tentacles of cnidarians called?
a. choanocytes
b. amoebocytes
c. cnidocytes
d. pneumatocyte
50. What is the file-like structure of a mollusk that is used scrape food up?
a. mantle
b. visceral mass
c. radula
d. gill
e. shell
51. Which animals are important to farmers because they aerate the soil and increase the amount of available nutrients in the soil?
a. nematodes
b. flatworms
c. polychaetes
d. earthworms
e. leeches
52. What type of skeleton do echinoderms have?
a. exoskeleton
b. endoskeleton
c. no skeleton
d. segmented
e. water vascular system
Explanation / Answer
Dear i have answered most of your question around 60 %
26. Koala bear is a C. Marsupial.
27. a. good sense of small
b. ability to detect electrical fields
28. b. notochord
c. pharyngeal slits
d. post anal tail
29. Not sure sorry if i am wrong but i fee l answer would be b. a snail and octopus
30. c. annelids
31. d. cnidarians
32. c. sponges
33. b. blastula
34. b. mollusks
35. d. Platyhelminthes
36. not sure
37. it should be around 150 million years ago (No option) so let consider option a as answer
a. 100 million years ago
38. c. anteater
39. c. Ardipithecus ramidus
40. Not answered
41. c. sharks and rays
42. d. skin
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