Interactions and Ecosystems: Unit Test Flashcards
The four basic needs of living things are:
air, water, food, habitat
Some living things depend on each other in a close relationship, which lasts over time. This relationship is called …
- mutualism
- parasitism
- symbiosis
- commensalism
symbiosis
Adaptations are 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 survival adaptation
A salamander hides under the bark, fungi grows on a rotting log and other forest dwelling organisms use the hollow
core as a home. This rotting decaying log is an …
ecosystem
Tapeworms live inside organisms and feed on the nutrients of the food they eat. A tapeworm is an example of …
parasitism
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 …
- clothing
- canoes
- tipis
- cooking utensils
clothing
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 …
ran them over a cliff
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.
- birth defects in baby chicks
- soft egg shells
- bioaccumulation in wolves
- death of small mammals
soft egg shells
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 …
prey will become overpopulated
An ecosystem thrives with biotic and abiotic component parts. An example of an abiotic part of an ecosystem is …
- micro-bacteria
- fungus
- water
- decaying plants
water
To determine an organism’s niche, all of the following must be determined, EXCEPT …
- how it is classified
- what it eats
- where it lives
- what relationships it has with other organisms
how it is classified
Organisms in an ecosystem 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 …
omnivore
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 food web is a complex system of food chains
Carbon is an integral part of an ecosystem. It is cycled throughout the ecosystem as it is used and then reused. It is necessary for all life to exist. Carbon is used by plants in the process of …
photosynthesis
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 …
- evaporation and condensation
- condensation and precipitation
- transpiration and condensation
- evaporation and transpiration
condensation and precipitation
