SNC1D1 – Ecosystem Unit Test Outline
Section 0__
Name: ___________________ Test Date: ____________________
Biology Unit Review – Chapter 2
1. In your notebook, write the word(s) needed to complete
each of these sentences.
a. The solid part of Earth’s surface is called the _____.
b. Oxygen is required by almost all organisms for the
process of ___ and is a by-product of ___.
c. The ___ refers to all water on Earth in the solid, liquid,
and gas states.
d. An ecosystem is ___ if it can continue to function over
very long periods of time.
e. The population that an ecosystem can support
continuously is called its ___.
f. ___ ecosystems are another name for salty ocean
ecosystems.
g. A(n) ___ describes a community of living things and their
surrounding physical environment.
h. Most of the light that reaches Earth’s surface is absorbed
by the ___ and the ___. This absorbed light energy is then
converted into ___ energy and warms the Earth’s surface.
i. A very small fraction of light striking the Earth is absorbed
by living organisms in a process called ___.
j. The word equation for cellular respiration is:
Sugar + ___  carbon dioxide+water+energy
Select the best answer from the four choices:
2. Which one of these spheres is made up of parts of the other
3 spheres?
a.
Atmosphere
b. Biosphere
c.
Hydrosphere
d. Lithosphere
3.
4.
5.
6.
Which of these factors in a pond ecosystem is a biotic
factor?
a.
Bacteria
b. Sediment
c.
Temperature
d. Water
Which of the terms applies to 2 organisms of different
species that live together, when both benefit from the
relationship?
a.
Commensalism
b. Competition
c.
Mutualism
d. Predation
Which of the following represents a producer-consumer
relationship?
a. Hawks eating snakes
b. Flowers growing on a plant
c. Rabbits eating grass
d. Earthworms eating dirt
Why are decomposers important in the carbon and nitrogen
cycles?
7.
Compare photosynthesis and cellular respiration using the
following criteria.
a. What raw materials are needed?
b. What are the products?
c. Which occurs in plants?
d. Which occurs in animals?
e. Is light needed?
f. Is energy released?
g. Is energy needed?
h. Is chlorophyll needed?
8.
Why is sunlight important for the biosphere?
9.
In your own words, explain what is meant by the term
“trophic level”.
10. Explain the difference between a food chain and a food web.
11. In your own words, define oligotrophic and eutrophic.
12. List 4 biotic and 4 abiotic features you would expect to find
in:
a. Tundra Biome
b. Boreal Forest
c. Grassland Biome
d. Temperate Deciduous Forest
13. If energy is always being lost from organisms in food webs,
where does new energy come from?
14. Use the following data to draw a pyramid of energy showing
each trophic level.
An ecosystem contains grass plants that have 100,000kJ of
energy available to them, 5000kJ of energy available to
snails, 80kJ of energy available to shrews, and 8kJ of energy
available to owls.
15. As more and more houses were built around a small pond,
people noticed that there was a build-up of green algae in
the spring and the water was not as clear as it used to be.
They also noticed that fishing was poor. What could account
for these environmental changes?
Use Figure 1 to answer questions 15-19
16. Classify each organism as a producer, herbivore, carnivore,
or omnivore.
17. Identify ONE organism within the food web that would be
directly affected by the increased population of large fish?
18. Predict how the elimination of whales would affect the
populations of starfish and squid.
19. If the gull population increased significantly, how would
lobster population be affected?
20. Give two examples of each of the following ecological niches
(roles):
a.
Carnivore
b. Omnivore
c.
Decomposer
d. Producer
21. Carbon, oxygen, and hydrogen are readily available to living
organisms, but nitrogen is more difficult to obtain. Explain
why this statement is true.
22. Corn is a high-protein crop that requires large amounts of
nitrogen in the soil to grow well. How might planting a
legume, such as soybean, in the same field the previous year
improve the growing conditions for corn?
Biology Unit Review – Chapter 3
1. In your notebook, write the word(s) needed to complete
each of these sentences.
a. The changes following events such as forest fires are
called ___ succession.
b. ___ biome exhibits the highest biodiversity of any
ecosystem.
c. When non-native species are able to out-compete native
species, they may become ___.
2.
Identify an invasive species, and describe 3 main ways of
controlling invasive species.
Select the best answer from the four choices:
3. Which of the following is an example of mechanical control
over invasive species?
a. Removing the species by hand
b. Applying pesticides to the species
c. Educating people about the species
d. Intentionally introducing another species
4.
5.
(a)
(b)
(c)
(d)
(e)
6.
7.
Which of the following correctly explains bioremediation?
a. Introducing organisms to control invasive species
b. Re-establishing micro-organisms in a disturbed
ecosystem
c. Using micro-organisms to consume environmental
pollutants
d. Collecting organisms produced by ecosystems for
commercial use
Match each term on the left with the most appropriate
description on the right.
Acid rain
(i) Blocks the digestive systems of
Plastic at sea
animals
Oil spill
(ii) Increases rates of soil erosion
Clear-cutting
(iii) Introduces disease-causing
Invasive species
organisms
(iv) Damages statues and buildings
(v) Interferes with an animal’s ability
to insulate
Some people who live in neighbourhoods that have a deer
population put food out for the deer.
a. How would this action affect both the deer population
and human population in the neighbourhood?
b. Do you think this is a wise practice? Explain your answer.
8.
Asian carp have been released into the water and are rapidly
spreading through the Great Lakes/Mississippi River.
a. What would you expect to happen to the population of
Asian carp species over the next few years?
b. How is this species likely to influence other species and
the natural ecosystem?
c. What can and should be done about this introduction?
Biology Unit Review – Chapter 4
1. In your notebook, write the word(s) needed to complete
each of these sentences.
a. Any unwanted organisms can be considered a(n) ___.
b. Manure and ground-up bone meal would be considered
___ fertilizers.
c. Toxins kill plants, insects, and rodents are all examples of
___.
d. Some pesticides and other environmental toxins build up
or ___ in living organisms.
e. ___ pesticides kill only a limited variety of living things.
f. ___ uses a number of different techniques to control
pests.
g. A(n) ___ is a large concentration of a single species
growing in one area.
2.
(a)
(b)
(c)
(d)
Match each term on the left with the appropriate definition
on the right
Altered timing
i. Using predatory species to
Biological control
get rid of pests
Crop rotation
ii. Changing the location of
Baiting pest
monocultures each year
iii. Scheduling planting and
harvesting avoid pests
iv. Confusing mating insects
with pheromones
3.
a. List the advantages and disadvantages of broad-spectrum
and narrow spectrum pesticides.
b. Identify different cases for which each of these might be
preferred.
4.
What are the advantages of not using pesticides to control
pests?
5.
Draw a diagram to illustrate the process of bioamplification
(bioaccumulation).
6.
If organic products are grown without the addition of
expensive pesticides, hormones, and fertilizers, why do
these products cost more?
7.
Explain why the term pest does not apply to natural roles in
ecosystems. Do you think any species would consider
humans to be pests? Explain your answer.
Research an endangered species that lives in your area. (a)
Explain why the species has become endangered. (b) What
steps can be taken to protect this species?
8.
When humans and other animals use fats stored in their
bodies, they often release toxins that have accumulated in
these tissues. In humans, nursing mother use their own body
fats to produce breast milk. In birds, large amounts of fats
are used during egg production.
a. Why should pregnant or nursing mothers be concerned
about pesticide use?
b. How might pesticide use threaten the heath of bird
populations?
c. How can organic foods help address both of these
concerns?
**Review POPULTION GRAPHS assignment
Test Outline 2013
Section/Marks
Part A – Multiple Choice
(KU /20)
Part B – Communication
Questions (Cm /10)
Part C – Thinking Questions
(TI /20)
Part D – Application Questions
(Ap /15)
Total 65 marks Wt-5
Major Topics
Ecosystem terminology
Population graph, producers,
consumers, types of lakes
Graph analysis, abiotic/biotic,
aquatic/terrestrial ecosystems,
predators, pyramid of energy,
pesticides, invasive species
Nitrogen cycle, decomposers,
pesticides, forestry, human
interactions