C190 Pre-Assessment
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1. 1.
2. 3What event occurred at point A? Speciation Event
3. 2The cladogram below depicts relationships between Point E
organisms:
[A cladogram depicts a straight line going up and to
the right split into five sections starting from branch
point A to branch point F.]
• The first segment of the line starting at the far left
goes from branch point A to branch point B. Above
point A is a branch to a lamprey, and along the first
segment of the line, the characteristic of jaw is given.
• The next segment of the line goes from branch point
B to branch point C. Above point B is a branch to a
shark, and along the line segment, the characteristic
of bones is given.
• The next segment of the line goes from branch point
C to branch point D. Above point C is a branch to a
fish, and along the line segment, the characteristic of
fingers and toes is given.
• The next segment of the line goes from branch point
D to branch point E. Above point D is a branch to a
frog, and along the lin
4. 4reffer to the following
5. 5reffer to the following
6. 6reffer to the following
7. 7In most ecosystems the primary source of energy Organelles
that supports all the organisms within comes from
the sun. Green plants transform energy from the sun
, C190 Pre-Assessment
Study online at https://quizlet.com/_ebtcpg
into chemical energy that can be used by living things.
This occurs within structures called chloroplasts.
Where do chloroplasts fall on the level of hierarchical
biological organization?
8. 8The tundra ecosystem is found in cooler climates 1) Biotic
in a wide region spanning Canada to the Arctic. Low 2) Organism
growing plants and lichens provide food for small
mammals, such as lemmings.
What are lemmings classified as in this ecosystem?
9. 9Largemouth bass have recently been introduced Adapting to have
into ponds that previously did not contain any large, a faster average
predatory fish. swim speed
Which adaptation would help the existing population
of small, prey species of fish avoid predation from the
largemouth bass?
10. 10Bacteria were killing off the male larvae of a but- Male butterflies
terfly, threatening the existence of this species. Ten that were resis-
generations later, though, the butterflies are making tant to the infection
a comeback. survived and were
able to reproduce.
How might natural selection have kept the butterflies
from becoming extinct?
11. 11A gardener maintains a species of roses that pro- Mutation
duce either yellow flowers (the dominant phenotype)
or white flowers (the recessive phenotype). One day,
the gardener observes that a cross between two yel-
low rose bushes has led to a single rose bush with
orange flowers.
What evolutionary mechanism is involved in the
change in the gene pool of this species?
12. Gene flow
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