Solutions
___ do NOT have tidal flow of air:
A. birds
B. reptiles
C. mammals
D. amphibians Correct Answer A
______ combines with water to form carbonic acid in the
capillaries.
A. CO2
B. HCO3-
C. H2CO3
D. O2 Correct Answer A
A flowering plant may reproduce asexually. When it does so,:
A. the sexual organs of flowers are usually involved
B. the progeny may be better adapted to the environment than
the parent
C. the progeny will show more genetic diversity than the parent
D. the progeny are genetically identical to the parent. Correct
Answer D
A human recessive trait appears in 1 in 100 births. What
frequency of people are homozygous dominant for this trait?
A. 0.90
B. 0.10
C. 0.01
D. 0.81 Correct Answer D
, A Tyrannosaurus rex's (a dinosaur) closest relative is a
A. frog, an amphibian.
B. fish.
C. squirrel, a mammal.
D. chicken, a bird. Correct Answer D
All blastulas contain a(n)
A. hollow blastocoel
B. neural tube
C. acrosome
D. archenteron Correct Answer A
An adaptation in arthropods that allowed them to colonize land
was:
A. gas- and water-permeable exoskeletons
B. utaneous respiration in moist habitats
C. positive pressure breathing to increase gas exchange
D. the ability to close spiracles to prevent water loss Correct
Answer D
As adaptions for flight, the wings of bats and the wings of birds
are an example of
A. paraphyly.
B. monophyly.
C. synapomorphy.
D. convergent evolution. Correct Answer D
Birds, like mammals, can regulate their body temperatures
within close limits. Therefore, birds and mammals are called:
A. ectothermic
B. poikilothermic