WorksheetsU2-L2 Resource Availability in Ecosystems
Total questions: 31
Worksheet time: 16mins
What do humans, hummingbirds, and earthworms have in common according to the text?
They all have different basic needs.
They all have the same basic needs.
They all live in the same environment.
They all eat the same food.
What types of resources do organisms need?
Living and nonliving
Expensive and cheap
Large and small
Old and new
Where do organisms get the resources they need?
From the ecosystem
From other species
From only abiotic factors
From only biotic factors
What does the growth of individuals and populations depend on?
Resource availability
Time of day
Weather conditions
Color of the sky
What does the growth of a population depend on?
The color of the organisms
The availability of resources
The size of the ecosystem
The speed of the wind
What happens when organisms in an ecosystem have an abundance of resources?
The population will decrease
The population will stay the same
The population will likely increase
The organisms will change color
What happens to organisms under conditions of scarce resources?
All organisms thrive and grow.
Not all organisms can get the resources they need.
Resources become unlimited.
Populations grow rapidly.
What is a possible consequence of very scarce resources?
All individuals survive.
Populations grow larger.
Some individuals may not survive.
Resources become abundant.
How can a change in the amount of resources affect a population?
The population size remains constant.
The population may become larger or smaller.
The population always becomes larger.
The population always becomes smaller.
How does resource availability influence populations?
It affects the growth and survival of individuals and the sizes of populations.
It has no effect on populations.
It only affects plant life.
It only influences the weather.
What is critical for the population as a whole?
The types of resources that individuals need.
The color of the environment.
The number of trees.
The amount of sunlight.
What do individuals within a population share?
The same resources.
The same color.
The same height.
The same age.
Why might individuals compete with each other?
For access to resources.
For fun.
To change color.
To grow taller.
What can an increase in population size lead to regarding resource availability?
More resources for each individual
Fewer resources for each individual
No change in resources
Unlimited resources
What can competition between different populations result in?
More resources for everyone
Fewer resources for some populations or individuals
Equal resources for all
No effect on resources
Which of the following can affect resource availability?
Environmental factors
Human activities
Technological advancements
Economic policies
What may cause a deer population to decrease?
Increase in food supply
Continuous rainfall
Decrease in plant production
decrease in sunlight
How can natural events like wildfires affect resource availability?
They increase resource availability
They have no effect
They limit resource availability temporarily
They permanently destroy resources
What happens when resources in an ecosystem are limited?
Individuals share resources equally.
Individuals must compete for resources.
Resources become unlimited.
Resources are not needed.
When does competition occur in an ecosystem?
When resources are unlimited.
When two or more individuals try to use the same limited resource.
When individuals avoid each other.
When populations decrease.
What can happen if an organism does not get the resources it needs?
It will grow faster.
It may not survive to reproduce.
It will become stronger.
It will find new resources easily.
What are abiotic factors in an ecosystem?
The living parts of an ecosystem
The nonliving parts of an ecosystem
The plants in an ecosystem
The animals in an ecosystem
What is an example of an important abiotic resource for fish in a lake?
Sunlight
Soil
Oxygen dissolved in water
Trees
What happens to fish populations if there is plenty of oxygen and other resources?
They decrease in size
They remain the same
They become unhealthy
They increase in size
What may happen if oxygen becomes limited in a lake?
Fish populations may increase
Fish populations may decline
Fish will become more colorful
Fish will grow larger
What are biotic factors in an ecosystem?
Non-living parts of an ecosystem
Living parts of an ecosystem
Chemical elements in an ecosystem
Weather conditions in an ecosystem
Which of the following is NOT a biotic factor?
Bacteria
Fungi
Rocks
Plants
What happens if an insect's food source is negatively affected?
The insect population increases
The insect population decreases
The insect population remains the same
A new insect population migrates in
What is an example of resource abundance caused by humans?
Deforestation
Algal bloom
Desertification
Urbanization
What carries garden and agricultural fertilizers into aquatic ecosystems?
Wind
Animals
Rainwater runoff
Sunlight
What is the result of abundant nutrients in aquatic ecosystems?
Decrease in fish population
Extreme growth of algal populations
Increase in water temperature
Reduction in water clarity
