Worksheets4.5: Limiting Factors (Abiotic/Biotic)
Total questions: 28
Worksheet time: 25mins
What is a limiting factor?
Factors that always increase a population
Factors that always decrease a population
Resources that are unlimited
Factors/resources that limit how many organisms can live in an area at the same time
If there was a wildfire in the forest that destroyed the plant life, what would happen to the herbivore population?
Herbivores would decrease due to a lack of food
Herbivores would increase due to an increase of food
Herbivores would not be affected
Herbivores would decrease due to an increase in predators
If humans were to release a pack of wolves into the forest, what type of factor would this be?
Abiotic
Biotic
What is an ecosystem?
All the organisms living in an area
A group of the same species living together
All of the organisms living in an area and the non-living environment around them
Which of the following would lead to a decrease in tertiary consumers?
An increase in herbivores and omnivores
An increase in rain
A decrease in competition
A new carnivore population moving to the area
Which of the following would lead to a decrease in tertiary consumers?
An increase in herbivores and omnivores
An increase in rain
A decrease in competition
A new carnivore population moving to the area
Abiotic is the same as dead
true
false
What would happen to all organisms on the food web if a disease killed off most of the grass?
Increase
Decrease
Stay the same
What is a disease?
What would happen to the bird population if mouse population increased?
Increase
Decrease
Stay the same
What is a mouse?
What would happen the organisms in this food web if there was a severe drought?
Increase
Decrease
Stay the same
What is a drought?
Which of the following is a tertiary consumer in this food web?
Rabbit
Hedgehog
Fox
Bacteria
What three factors affect the rate of photosynthesis?
Sunlight, Carbon Dioxide, Water
Water, Food, Sunlight
Temperature, Carbon Dioxide, Sunlight
What do decomposers do?
Feed on carnivores exclusively.
Break down and recycle dead organisms and organic matter.
Prevent living organisms from taking up space in an ecosystem.
Feed on producers exclusively.
Which of the following is not a limiting factor for rabbits?
sunlight
grass
water
foxes
If a disease that destroyed oak trees came through an ecosystem, what would happen to the acorn eating squirrel population?
nothing - it would stay the same
the squirrel population would increase
the squirrel population would decrease
none of the above
environmental factors that cause a population to stop growing or decrease in size
carrying capacity
limiting factor
ecosystem
community
If the amount of food resources increases, the population of an animal would
increase
decrease
stay the same
go extinct
Weather conditions are not considered a limiting factor.
True
False
Organisms need enough space to live, obtain resources, and reproduce.
True
False
ATP
Which of the following equations represents the overall chemical reaction for photosynthesis?
6O2+ 6H2O → C6H12O6+ 6O2
C6H12O6 + 6H2O→ 6O2+ 6O2
6CO2+ 6H2O→ C6H12O6+ 6O2
6O2 + 6H2O→ C6H12O6 + 6CO2
What do limiting factors do?
Separate biotic factors from abiotic factors.
Determine which is the predator and which is the prey.
Regulate how many organisms live in an ecosystem.
Determine which natural disasters will hit an area.
What happens to a population when a new predator is introduced?
The population becomes extinct
The population decreases
The population remains the same
The population increases
Which of the following is an example of an abiotic factor?
Grass
Wolves
Deer
Sunlight
How does a decrease in water availability affect plant populations?
Plant populations increase
Plant populations become more diverse
Plant populations decrease
Plant populations remain unchanged
