1.

Question

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1 point
panthera tigris and panthera leo are a different
order
species
genus
phylum
2. A tool scientists use to classify organisms by their traits is known as
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1 point
binomial nomenclature
taxonomy
dichotomous key
limiting factors
3. Use the image below to answer the next 2 questions:

4. This graphic represents a
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1 point
dichotomous key
carrying capacity
food web
phylogenetic tree
5. The orange arrow at the bottom of the image points to
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1 point
the most recent common ancestor of the Lesser Apes and the Great Apes
the most recent common ancestor of humans and chimpanzees
the most recent common ancestor of gibbons and orangutans
None of the above are correct
6. A keystone species is one that
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1 point
a. eats a mixture of plants and animals
b. is introduced into a community after a major disturbance
c. causes the amount of diversity in a community to decrease
d. helps to stabilize the populations of other species in the community
Use the Figure below to answer the next 3 questions.

7. What is happening to the growth of the population shown at interval 2:
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1 point
a. Initial growth
b. Steady state
c. Decline
d. Exponential growth
8. The dashed line represents
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1 point
a. The birthrate of this population
b. The migration rate of this population
c. The carrying capacity of this population
d. The extinction rate of this population
9. Name 2 factors that could have caused the population to level off in stages 3 and 4.
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2 points
10. Which of the following is an example of competition?
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1 point
a. The leaves of a tree prevent a small shrub from getting sunlightb. Three species of bird feed at different heights in the same tree
b. Three species of bird feed at different heights in the same tree
c. Zebra and giraffes feed on different grassland plants
d. Cats living in two different homes eat the same brand of cat food
11. Which factor has the largest impact on biodiversity?
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1 point
introduction of a new species
increased predation
habitat loss
poaching
12. Small, controlled experiments in a laboratory have fewer _________ than ecosystem-scale experiments
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1 point
reseachers
variables
models
procedures
13. A herd of antelope has 20 members. How big is the herd after 3 male immigrate, 2 females emigrate, 1 female is born, and 2 males die?
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1 point
18
20
21
22
14. The image below is an example of
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1 point
Captionless Image
interspecific competition
torpor
intraspecific competition
predator-prey interaction
15. Severe weather events can impact biodiversity. Think about a severe weather situation you have experienced near your home or have witnessed on the news. In 3–5 sentences, explain how the severe weather event created ecological disturbances that impacted biodiversity.
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3 points
Analyze the graphs below

16. Which species was most successful at surviving when grown together?
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1 point
P. aurelia
P. caudatum
Both were successful at surviving
Neither survived
17. Explain what happened to these populations in Graph C. Be detailed.
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2 points
18. The first organisms to repopulate an area affected by a volcanic eruption are called
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1 point
pioneer species
keystone species
invasive species
apex species
19. Which organism is considered the apex predator in this food web?
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2 points
Captionless Image
20. Describe how the removal of the apex predator would affect at least 2 other species in this ecosystem.
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2 points
Essential Standard #6 Energy Flow Check
How are molecules cycled back through the ecosystem?
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1 point
Molecules are cycled back through the ecosystem when organisms die. Decomposers break down dead and decaying organisms and return their molecules back into the ecosystem.
Molecules are cycled back through the ecosystem during photosynthesis.
Molecules are cycled back through the ecosystem during cell respiration.
All of the above are ways that molecules cycle through the ecosystem.