Name the Relationship
A tick feeds on a dog. The tick benefits, and the dog is harmed.
Name the relationship.
Parasitism
A population of rabbits does not have enough food.
Name the limiting factor.
Food
Water, temperature, and rocks are examples of which type of factor?
Abiotic
A drought causes less water to be available. Will the population most likely increase or decrease?
Decrease
In which relationship do both organisms benefit?
Mutualism
A bird builds a nest in a tree. The bird benefits, while the tree is unaffected.
Name the relationship.
Commensalism
Disease spreads through a deer population.
Name the limiting factor.
Disease
Plants, animals, fungi, and bacteria are examples of which type of factor?
Biotic
More predators move into an ecosystem. What will most likely happen to the prey population?
Decrease
In which relationship do organisms need the same limited resource?
Competition
Bees get food from flowers while helping the flowers reproduce.
Name the relationship.
Mutualism
Birds have plenty of food and water but very few places to build nests.
Name the limiting factor.
Nesting Sites
A pond contains fish, plants, water, sunlight, and rocks. Name TWO abiotic factors.
A predator population decreases. What will most likely happen to its prey population at first?
Increases
Parasitism and predation have something in common. How is one organism affected in both?
One organism is harmed.
A worm lives inside an animal and takes nutrients from it.
Name the relationship AND identify which organism benefits.
Parasitism and the worm benefits.
A population has plenty of food and water but not enough room.
Name the limiting factor.
Space
A drought causes a pond to lose water.
Is the factor causing the change abiotic or biotic AND what is the factor?
Abiotic, water
Available food decreases. Explain one way this could affect a population.
The population could decrease because fewer individuals have enough food.
Give one difference between mutualism and commensalism.
Both benefit in mutualism; only one benefits in commensalism while the other is unaffected.
Organism A benefits. Organism B is harmed but is usually not immediately killed.
Name the relationship AND explain your evidence.
Parasitism; one benefits while the other is harmed.
A bird population decreases after food and nesting sites become scarce.
Identify BOTH limiting factors
Food and nesting sites
A drought kills many plants. Identify the abiotic factor AND explain how it could affect a biotic factor.
Water is the abiotic factor; less water can cause plant populations to decrease.
A rabbit population becomes very large, but food and shelter do not increase. Predict what will happen to the population AND explain why.
It will likely decrease because food and shelter become limiting factors.
Explain one difference between competition and predation.
Competition involves organisms seeking the same limited resource; predation involves one organism capturing/eating another.