WorksheetsOSE 7.5 Final Test
Total questions: 30
Worksheet time: 35mins
Which ecosystem would be least affected by a severe drought lasting five years straight?
Grassland
Rainforest
Desert
All ecosystems would be affected equally.
Use the food web to answer the following question: What could be the cause of a decrease in the population of bass?
(See Attached Diagram)
An increase in the snail population
An increase in the snapper turtle population
An increase in the population of sunfish
An increase in the minnow population
Population
Relationships between an organism or population and abiotic factors
How all of the living and nonliving things in an area interact
A group of interacting individuals of the same species located in the same area
Not living or produced by living things
How all of the living and nonliving things in an area interact
Abiotic
Biotic
Organism
Ecosystem
What abiotic factors influence the relationships of organisms in ecosystems?
Sunlight, rainfall, and plant growth
Sunlight, rainfall, and invasive species
Sunlight, weather, and human interaction
Sunlight, weather, and soil composition
Not living or produced by living things
Organism
Ecosystem
Abiotic
Interdependent interactions
Which is NOT a biotic factor that influences the relationships of organisms in ecosystems?
Competition among predators
A disease caused by bacteria
Invasive species
Weather
In this food web, what would happen if the zebra population declined due to a disease?
(See Attached Diagram)
The grass population would decrease.
The giraffe population would decrease.
Baboons would have a food shortage.
There would be more competition among the lions, hyenas, and cheetahs.
Organism
How all of the living and nonliving things in an area interact
A single, self-contained living thing
Living or produced by living things
Relationships between an organism or population and abiotic factors
Interdependent interactions
Relationships between an organism or population and abiotic factors
A single, self-contained living thing
Multiple systems working together to accomplish various tasks
Living or produced by living things
The graph here shows the populations, over several years, for two animals that share a habitat. Foxes are mammals that hunt for food, and grouse are birds, a common prey animal of foxes.
(See Attached Diagram)
According to the data, in which year did the population of foxes show a decrease that is most likely the result of a decrease in the availability of a source of food?
2003
2005
2008
2012
An increase in the population of an organism would most likely be associated with which of the following?
A series of severe weather events in the habitat
A decrease in necessary resources available
An expansion of suitable living space
An increase in animals that prey on the organism
What data would be most helpful to support the claim that the population of a certain plant is dependent on the rainfall in its habitat?
The average amount of water absorbed by the roots and given off by the leaves of these plants
The amount of water retained in the soil in the area where the plants live
Rainfall amounts and number of these plants in a certain habitat over several years
The heights and number of leaves produced by these plants under different moisture conditions
The milkweed plant serves an important role in the life cycle of the monarch butterfly. Adult monarchs lay their eggs in milkweed, and then caterpillars eat that same plant during their development. Based on the relationship between monarchs and milkweed, which of the following trends would be predicted when looking at data on the populations of these two organisms?
Population decrease in monarch butterflies should follow population decrease in milkweed.
Population of monarch butterflies should remain constant when milkweed population decreases.
Population increase in monarch butterflies should follow population decrease in milkweed.
Population of milkweed should remain constant when monarch butterfly population increases.
The graph provides data on the populations of four organisms that share a habitat.
(See Attached Diagram)
This data supports a claim that which two organisms depend on each other?
Organism 1 and Organism 2
Organism 2 and Organism 3
Organism 3 and Organism 4
Organism 1 and Organism 4
Take a look at the attached graph. It shows the change in population size of two populations living in the same environment: rabbits and lynx. Lynx are a species of wildcat. Carefully analyze how the increase and decrease in population size of one affect the other. Does this graph show that these populations are competing for the same resources or that they are in a predator-prey relationship?
As the population of one species increases, the other species population decreases showing they are in a predator-prey relationship.
As the population of one species increases, the other species population decreases showing they are competing for the same resources.
As the population of one species decreases, the other species population decreases showing they are in a predator-prey relationship.
As the population of one species decreases, the other species population decreases showing they are competing for the same resources.
Environmental interactions include the _________________between the living and nonliving factors in an ecosystem.
organism
relationships
resources
independent
Organisms grow, reproduce, and make more of their species by obtaining resources through_______________ relationships with other organisms and the physical environment.
interdependent
abiotic
independent
population
Water is a(n) __________ factor of an ecosystem, while plants are __________ factors of ecosystems.
biotic, biotic
biotic, abiotic
abiotic, biotic
abiotic, abiotic
Plants and animals may compete over ________________.
omnivores
population
organisms
resources
