UMKC bio 109 Exam 1 Questions With Complete Solutions
28. Which prokaryotes should be expected to be most strongly
resistant to plasmolysis (cytoplasmic shrinking) in hypertonic
environments?
A. extreme halophiles B. extreme thermophiles C. methanogens
D. photosynthetic bacteria
A
29. Which o f these statements concerning dinoflagellates
is false?
A. Some cause red tides. B. They possess two flagella.
C. Their dead cells accumulate on the seafloor and are mined to
serve as abrasives.
D. Toxins produced by certain dinoflagellates have caused
massive kills of invertebrates and fishes.
C
30. Eutherians differ from monotremes and marsupials in that
eutherians...
A. lactate, are oviparous and express vitellogenin genes.
B. lactate, are viviparous and do not express vitellogenin genes.
C. do not lactate, are oviparous and express vitellogenin genes.
D. do not lactate, are viviparous and express vitellogenin genes.
B
,31. A chemoheterotoph utilizes
A. CO2 as its source ofenergy and carbon.
B. organic molecules for energy and as a carbon source.
C. CO2 for carbon and inorganic substances such as H2S as an
energy source. D. light energy to drive the synthesis oforganic
compounds from CO2•
B
32. Which of the following statements concerning a bilaterally
symmetrical animal is false?
A. has a left side and a right side B. many exhibit cephalization
C. only one imaginary cut divides the animal into mirror-image
halves
D. generally move actively from place to place
E. their symmetry equips them to meet the environment equally
well from all sides
E
33. Which ofthe following combinations ofphylum and
description is incorrect?
A. Echinodermata - bilateral symmetry as a larva, coelom
present
B. Nematoda - roundworms, pseudocoelomate
C. Cnidaria - bilateral symmetry, triploblastic
D. Platyhelminthes - flatworms, gastrovascular cavity,
acoelomate E. Porifera - no true tissues
, C
34. Which of the following is not an advantage of the arthropod
exoskeleton?
A. prevents water loss B. provides protection from predators
C. enhances sensory perception
D. provides rigid places for muscles to insert and against which
they can do work E. All ofthe above are an advantage ofan
exoskeleton.
C
35. Which ofthe following phyla do not have a gastrovascular
cavity with a single opening?
A. Annelida (earthworms, leeches) B. Platyhelminthes
(flatworms)
C. Cnidaria (jellyfish, etc.) D. All ofthe above have a
gastrovascular cavity.
A
36. A student encounters an animal embryo at the eight-cell
stage and exhibits spiral cleavage. This embryo may potentially
develop into all ofthe following except a(n)...
A. sea urchin. B. earthworm. C. clam. D. beetle. E. snail.
A
37. A new animal species is discovered with the following
external characteristics: jointed appendages, a hard exoskeleton,
28. Which prokaryotes should be expected to be most strongly
resistant to plasmolysis (cytoplasmic shrinking) in hypertonic
environments?
A. extreme halophiles B. extreme thermophiles C. methanogens
D. photosynthetic bacteria
A
29. Which o f these statements concerning dinoflagellates
is false?
A. Some cause red tides. B. They possess two flagella.
C. Their dead cells accumulate on the seafloor and are mined to
serve as abrasives.
D. Toxins produced by certain dinoflagellates have caused
massive kills of invertebrates and fishes.
C
30. Eutherians differ from monotremes and marsupials in that
eutherians...
A. lactate, are oviparous and express vitellogenin genes.
B. lactate, are viviparous and do not express vitellogenin genes.
C. do not lactate, are oviparous and express vitellogenin genes.
D. do not lactate, are viviparous and express vitellogenin genes.
B
,31. A chemoheterotoph utilizes
A. CO2 as its source ofenergy and carbon.
B. organic molecules for energy and as a carbon source.
C. CO2 for carbon and inorganic substances such as H2S as an
energy source. D. light energy to drive the synthesis oforganic
compounds from CO2•
B
32. Which of the following statements concerning a bilaterally
symmetrical animal is false?
A. has a left side and a right side B. many exhibit cephalization
C. only one imaginary cut divides the animal into mirror-image
halves
D. generally move actively from place to place
E. their symmetry equips them to meet the environment equally
well from all sides
E
33. Which ofthe following combinations ofphylum and
description is incorrect?
A. Echinodermata - bilateral symmetry as a larva, coelom
present
B. Nematoda - roundworms, pseudocoelomate
C. Cnidaria - bilateral symmetry, triploblastic
D. Platyhelminthes - flatworms, gastrovascular cavity,
acoelomate E. Porifera - no true tissues
, C
34. Which of the following is not an advantage of the arthropod
exoskeleton?
A. prevents water loss B. provides protection from predators
C. enhances sensory perception
D. provides rigid places for muscles to insert and against which
they can do work E. All ofthe above are an advantage ofan
exoskeleton.
C
35. Which ofthe following phyla do not have a gastrovascular
cavity with a single opening?
A. Annelida (earthworms, leeches) B. Platyhelminthes
(flatworms)
C. Cnidaria (jellyfish, etc.) D. All ofthe above have a
gastrovascular cavity.
A
36. A student encounters an animal embryo at the eight-cell
stage and exhibits spiral cleavage. This embryo may potentially
develop into all ofthe following except a(n)...
A. sea urchin. B. earthworm. C. clam. D. beetle. E. snail.
A
37. A new animal species is discovered with the following
external characteristics: jointed appendages, a hard exoskeleton,
