Name: SOLUTIONS
34/34 =100%
Grade 9 Science (SNC1D1)
Ecology Introductory Assessment Quiz #1
hawk
bobcat
weasel
mouse
frog
grasshopper
vole
grass
shrubs
seeds
Part A: Answer the following questions using the above food web.
10/10 marks
a)
Identify a heterotroph:
anything except for grass, shrubs, seeds
b)
Identify a primary (1o) consumer:
mouse, grasshopper, vole
c)
Identify a secondary (2o) consumer:
hawk, mouse, weasel, frog, bobcat
d)
Identify a top carnivore:
hawk, bobcat
e)
What is another name for a producer or plant?
autotroph
f)
Identify an omnivore
mouse
g) Name an organism at the first trophic level.
shrubs, grass, seeds
h) Write the members of a food chain that ENDS in a TERTIARY CONSUMER.
grass (producer) frog (primary consumer) weasel (secondary consumer) hawk (teritiary consumer)
i)
If there are 10000 units of energy in a vole how much energy will be transferred to the bobcat? Why?
1000 units of energy will be passed on to the bobcat because of the 10% rule
g) What effect would more weasels have on the bobcats?
More weasels means less frogs, grasshoppers and mice which means less food for the bobcat
5/5 marks
Part B: Multiple Choice - Circle the best answer.
1. Which group can best be described as a population?
a) all the honeybees in an orchard
c) the life in Earth's atmosphere
d) the living and nonliving factors in a meadow
b) all the plants and animals in a forest
2. All of Earth's water, land, and atmosphere within which life exists is known as
a) community b) biodiversity c) population d) biosphere
3. A student measured some abiotic factors present in an aquarium in a biology
laboratory. Which data did the student most likely record?
a) the size and number of each species of fish
b) the temperature and oxygen content of the water
c) the number of each type of green plant and each type of snail
4. Human activities are impacting
a) animals
b) plants
e) all of the previous answers
c) protists, fungi, and moneran organism
d) climate, land, water, air
5. Which ecological term refers to all the organisms shown in the diagram? 
a) heterotrophic
b) community
c) population
d) lithosphere
Part C: Calculations
1. Calculate the relative abundance of the japanese beetle, crow, milkweed bug and red tailed hawk
4/4 marks
Total Number of Organisms found in 25 m x 25 m Square Area of Grassland
species
# individuals
red tailed hawk
2
coyote
crow
1
10
opossum
raccoon
grasshoppers
japanese beetle
7
9
56
72
milkweed bug
64
Total
221
relative abundance
2/221 =
0.9%
10/221 =
4.5%
72/221 =
64/221 =
34%
29%
2. Indicate the species richness. 8
1/1 mark
2/2 marks
3. Calculate the biodiversity index….Show the formula and your work!!
biodiversity index = # of different species =
total # of individuals
8
221
=
0.036
4. What is the name of the sampling method that was used to gather the above data? Why?
(e.g. canopy fogging, quadrat sampling, transect sampling, netting)
quadrat sampling because the data was collect from a square
area
2/2 marks
5. Circle the negative trait associated with each species. Write the number in the bottom row.
species
X
Y
Z
size
large
large
small
diet
herbivore
carnivore
herbivore
biotic
potential
very low
low
high
range
species
small
small
large
range
individual
small
large
small
human
interactions
few
many
few
3
6
0
# of negative
traits
5/5 marks
a) Which species is most likely to be classified
as endangered?
species Y
b) Which species is most like to be classified as
vulnerable?
species X or Z
7. The sightings of the eastern cougar are very rare in all areas in which it is found.
What term would describe the eastern cougar’s current status? endangered
1/1 mark
8. The grizzly bear is no longer found in Manitoba and Saskatchewan but can still be found roaming
the mountains of Alberta and British Columbia.
What term would describe the grizzly bear’s current status? extirpated
9. Define biodiversity:
1/1 mark
1 /1 mark
 the variety and number of different life forms on our planet
10. Explain two activities that threaten biodiversity.
1. deforestation
2. urbanization
2/2 marks