Interactions Within
An Ecosystem
Human
Impacts on
Ecosystems
Environmental
Choices
How Organisms Interact
Cycles In The Environment
100
Living things have basic needs. Throughout the first topic in this unit the needs of living things were examined in depth. The four basic needs of living things are: A. food, clothing, shelter, love B. food, water, habitat, space C. water, air, habitat, protection D. air, water, food, habitat
D. air, water, food, habitat
100
The Nootka, an Aboriginal tribe from the West Coast of Canada, utilized the natural resources of the environment around them. They used the bark of the red cedar tree for ... A. clothing B. canoes C. tipis D. cooking utensils
A. clothing
100
1. Living beyond our means can have a devastating effect on our environment. So how much of an impact we make determines our ... A. sustainability B. ecosystem balance C. ecological footprint D. consumer bias
C. ecological footprint
100
1. An ecosystem thrives with biotic and abiotic component parts. An example of an abiotic part of an ecosystem is ... A. micro-bacteria B. fungus C. minerals D. decaying plants
C. minerals
200
2. Some living things depend on each other in a very close relationship, which lasts over time. This relationship is called ... A. mutualism B. parasitism C. symbiosis D. commensalism
C. symbiosis
200
Head-Smashed-In Buffalo Jump is in the Porcupine Hills, in southern Alberta. The Buffalo were hunted for their meat, hides, bones and sinew. Instead of hunting the Buffalo with spears and arrows they ... A. shot them with weapons provided by the settlers B. herded them into corrals C. ran them over a cliff D. cornered them up against a cliff
C. ran them over a cliff
200
2. One way of changing our impact on the environment we live in is to ... A. using a car instead of a bus to get to work B. pack our garbage in smaller bags C. take a bath every day instead of showering D. become aware of all the resources you use
D. become aware of all the resources you use
200
To determine an organism's niche, all of the following must be determined, EXCEPT ... A. how it is classified B. what it eats C. where it lives D. what relationships it has with other organisms
A. how it is classified
200
Petroleum products, which contain carbon, are burned, and the carbon escapes into the atmosphere, as carbon dioxide, BUT, how does it get into the petroleum in the first place? A. refineries B. plant respiration C. decomposing plankton D. photosynthesis in plants
C. decomposing plankton
300
Adaptations are inherited characteristics that help an organism to survive and reproduce in its environment. Looking both ways before crossing a street helps us survive because it is ... A. inherited from our parents B. learned through experience C. a survival adaptation D. an inherited survival experience
B. learned through experience
300
'Wants' are things that make our life more enjoyable. The distinction between a 'need' and a 'want' has become blurred. Satisfying our needs and wants usually uses natural resources. Which of the following is an example of a luxury? A. water from a well B. potatoes from a garden C. greenhouse tomatoes D. crabapples from your tree
C. greenhouse tomatoes
300
3. There are many waste-reducing practices, which are being suggested to lower the impact we are making in our environment. The most effective practice is ... A. recycling B. reusing C. reducing D. reclaiming
C. reducing
300
Organisms in an eco system can be classified as producers or consumers. The producers provide food for the consumers. An organism that consumes both producers and other consumers is called a ... A. herbivore B. omnivore C. carnivore D. prey
B. omnivore
300
Another very important cycle is the Water Cycle. All living things need water to live. This cycle has four main processes. The two processes that return water to the earth are ... A. evaporation and condensation B. condensation and precipitation C. transpiration and condensation D. evaporation and transpiration
B. condensation and precipitation
400
4. A salamander hides under the bark, fungi grows on the rotting log and other forest dwelling organisms use the hollow core as a home. This rotting decaying log is an ... A. environment B. ecological subsystem C. ecotrust D. ecosystem
D. ecosystem
400
Do we learn from our mistakes? Using pesticides that contained DDT was very effective in controlling insect pests on many crops. It was subsequently banned because of this harmful side effect. A. birth defects in baby chicks B. soft egg shells C. bioaccumulation in wolves D. death of small mammals
B. soft egg shells
400
4. When used materials are turned into new materials like kitchen scraps placed in a compost bin the practice being used is ... A. recycling B. reusing C. reducing D. reclaiming
A. recycling
400
Food chains and food webs are models in science which visually show us the different relationships within an ecosystem. The primary difference between the food chain and the food web is ... A. a food chain shows how energy is stored B. a food web shows how energy is used C. a food web is a complex system of food chains D. a food chain is a combination of different food webs
C. a food web is a complex system of food chains
400
The process in which water, in the water cycle, goes through a phase change, from a gas to a liquid, is called ... A. evaporation B. transpiration C. condensation D. precipitation
C. condensation
500
5. Tapeworms live inside organisms and feed on the nutrients of the food they eat. A tapeworm is an example of ... A. mutualism B. parasitism C. commensalism D. cannabalism
B. parasitism
500
Predators such as wolves and coyotes - and even bears - are moving closer and closer to highly populated areas. This is posing an increased danger to people, so predator populations are being culled (reduced in number). This can have a devastating effect on the ecosystem because without this natural control ... A. prey will also be reduced B. prey will become overpopulated C. prey will be kept in check D. vegetation will be overgrown
B. prey will become overpopulated
500
5. To determine your ecological footprint, all of the following calculations are necessary, EXCEPT for ... A. area of the house you need B. amount of water you use C. energy supply needed D. amount of waste you produce
C. energy supply needed
500
The clean-up crew are the decomposers. Decomposers and scavengers get rid of the garbage and waste in an ecosystem. Decomposers differ from scavengers because they ... A. only eat dead organisms B. do not eat dead organisms C. break down larger organisms D. only feed on dead plants and animals
B. do not eat dead organisms
500
Pollution can cause problems within any ecosystem. The pollutants can enter this ecosystem by combining with the water vapour in the air. Their effect is felt when they become ... A. basic and cannot be decomposed B. acidic and cannot be decomposed C. basic and increase plant growth D. acidic and destroy the ecosystem
. acidic and destroy the ecosystem
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