Ecology Unit Test Review

Question 1

Ecosystem

Answer 1

all the living organisms and their chemical and physical environment

Question 2

Biotic factor + ex. in aquatic and terrestrial ecosystems

Answer 2

-living things, their remains, and features, associated with their activities
-aquatic ecosystem: plants, fish, algae
-terrestrial ecosystem: plants, animals, insects

Question 3

Abiotic factor + ex. in aquatic and terrestrial ecosystems

Answer 3

-The non-living physical and chemical components of an ecosystem
-aquatic: water, sunlight, temperature
-terrestrial: sunlight, soil, temperature

Question 4

sustainably

Question 5

climate change

Answer 5

a change in the average temperature and cycles of weather over a long period of time

Question 6

greenhouse affect and gasses

Question 7

energy flow in ecosystems

Question 8

photosynthesis + formula

Answer 8

Conversion of light energy from the sun into chemical energy.
CO2 + H2O + light energy –> C6H12O6 + O2

Question 9

cellular respiration + formula

Answer 9

the process of turning sugar and oxygen to carbon dioxide, water, and energy
C6H12O6 + O2 –> CO2 + H2O + energy

Question 10

producers

Answer 10

An organism that can make its own food through photosynthesis

Question 11

consumer

Answer 11

An organism that obtains energy by feeding on other organisms

Question 12

Characteristic predator prey relationships

Question 13

carrying capacity

Answer 13

max population size an environment in each ecosystem

Question 14

food chain

Answer 14

a series of organisms each dependent on the next as a source of food

Question 15

food web

Answer 15

a system of related and dependent food chains

Question 16

what are ecological pyramids + explain the 3

Answer 16

models that show how energy flows through ecosystems
there are three types of pyramids:
energy - shows energy loss and transfer between levels
number - population of trophic levels
biomass - mass of an organism

Question 17

what is primary and secondary succession

Answer 17

primary: occurs on soil or bare rock, where no life previously existed following an event like a volcanic eruption
secondary: follows a disturbance that disrupts, but does not destroy the community

Question 18

Cycles (Water, Carbon, Nitrogen, Phosphorous)

Question 19

Biomes (Canadian and those in Ontario)

Question 20

biodiversity

Answer 20

variety of life found in an area

Question 21

fragmentation

Answer 21

• not rich biodiversity
• organisms are not able to find enough resources in smaller areas of land and may not be able to navigate safely to areas where resources are available

Question 22

invasive species

Question 23

pollution

Question 24

pests & poison

Question 25

impact on human factors on animals

Question 26

Low intensity & High intensity fires, Cultural Burns & Forestry Practices