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WorksheetsBiology - Topic 9 - Ecology
Total questions: 15
Worksheet time: 16mins
All the organisms that live and interact in an ecosystem
Population
Community
Habitat
Interdependent
Non-living conditions that can influence where plants or animals live e.g. temperature / amount of light
Abiotic factors
Biotic factors
Mutualism
Biological control
Which of the following is NOT a biotic factor?
mushroom
air
elephant
coyote
What is a square called that we use to sample populations?
grid
quadrat
cube
tricep
quarter
Why do scientists use sampling techniques to gather population data rather than counting everything?
scientists are lazy
sampling is more efficient and achievable
sampling is more accurate
scientists prefer estimations
sampling is cheaper
What type of population would you measure using a quadrat?
What is a Belt Transect?
A way of sampling the effect of an abiotic factor on the distribution of organisms
A way of sampling a non-changing habitat
A way of measuring the effect of a biotic factor on the distribution of organisms
What is the best way to place a quadrat?
Place it where you like
Divide the sample area into a grid and use a random number generator to choose a square.
Throw the quadrat so it's random
Divide the sample area into a grid and choose a square.
A symbiotic relationship where both organisms benefit.
mutualism
commensalism
parasitism
predation
A symbiotic relationship where one organism benefits and the other is harmed.
parasitism
mutualism
commensalism
predation
The graphs show how the number of mice predators (animals that eat mice) and the food source of the mice (plants) changed from 1996 to 2002.
Based on this information about predators and food, which year would you predict would have the highest population of mice?
1996
1998
2000
2002
The chart shows predator and prey relationships in four different ecosystems.. Which is a correct example of a change that would happen to one population because of a change in the other population because of a predator/prey relationship?
When the population of sharks decreases because of fishing, the population of small fish will decrease.
When the population of sharks decreases because of fishing, the population of small fish will decrease.
During hunting season when many deer are killed by hunters, the mountain lion population will decline.
When the mice population increases due to having more resources, the population of snakes will decrease.
Eutrophication is caused by
excess nutrients building up in the water.
industrial point-source pollution.
unlined landfills and septic tanks.
wastewater from homes mixing with drinking water.
How does eutrophication cause the death of aquatic organisms
the build up of carbon dioxide in the water
the lack of nitrogen in the water
the lack of carbon dioxide in the water
the lack of oxygen in the water
