WorksheetsEnvSci Fall Sem Exam Review
Total questions: 27
Worksheet time: 14mins
Using the model of an ecosystem below, select the choice with three abiotic factors that can be seen or inferred.
water, seaweed, bird
rock, water, fish
water, dolphin, seaweed
crab, bird, fish, seastars
water, temperature, sun
Which level of ecological organization contains both biotic (living) factors and abiotic (nonliving) factors?
Ecosystem
Community
Population
Individual
Predict how the removal of a top predator could affect the energy flow in an ecosystem.
Increase in tertiary consumers, decrease in producers
Decrease in secondary consumers, increase in primary consumers
Increase in primary consumers, decrease in producers
Decrease in quaternary consumers, increase in producers
In this ecosystem, a tornado strikes and takes out all the tall trees that the hawks rely on for nesting. Because of this, the hawk population is going to ________. This results in the increase in the ________ population and a cascading decrease in the ________ population.
increase, mouse, rabbit
decrease, bird, rabbit
stays the same, grasshopper, mouse
decrease, mouse, grasshopper
increase, rabbit, bird
If a drought caused a significant reduction in the producer population, what would be the likely chain of events in the ecosystem?
Decrease in primary consumer population, decrease in secondary consumer population
Increase in primary consumer population, increase in secondary consumer population
Decrease in primary consumer population, increase in secondary consumer population
Increase in primary consumer population, decrease in secondary consumer population
Which organism is the producer in the aquatic food chain?
small fish
tuna
one celled life
large shark
What role does the mackerel play in the aquatic food chain?
Producer
Primary consumer
Secondary consumer
Tertiary consumer
Which organism is the primary consumer in the aquatic food chain?
polar bear
plankton
arctic cod
krill
What is the correct order of the energy pyramid from bottom to top?
Producers, Primary Consumers, Secondary Consumers, Tertiary Consumers
Tertiary Consumers, Secondary Consumers, Primary Consumers, Producers
Primary Consumers, Producers, Tertiary Consumers, Secondary Consumers
Secondary Consumers, Producers, Tertiary Consumers, Primary Consumers
Which of the following best describes the movement of energy in an ecosystem?
Energy is magnified as it moves up the trophic levels, and tertiary consumers store the most energy in a food web.
Energy is constantly recycled by decomposers for use by producers.
Energy is absorbed by plants through water and soil and then moves up the food chain through consumers.
Energy is harnessed by producers, and available energy decreases with each trophic level transfer.
When constructing a model of energy transfers in an ecosystem, which trophic level typically contains the greatest amount of available energy?
Producers
Primary Consumers
Secondary Consumers
Tertiary Consumers
Which of the following is the best explanation of the role plants play in the carbon cycle?
They allow carbon to enter an ecosystem through photosynthesis
They absorb and use carbon dioxide for photosynthesis
They have special bacteria that live in their root systems
They are chemically converted into fossil fuels when burned
Put the biomes in the correct sequence encountered beginning at the equator.
Tropical rainforest, temperate deciduous forest, Taiga, Tundra
Tundra, Taiga, temperate deciduous forest, tropical rainforest
Tropical rainforest, Taiga, temperate deciduous forest, Tundra
Taiga, tropical rainforest, Tundra, temperate deciduous forest
Which of the following factors help explain the biome distribution in temperate zones? (there are THREE correct answers)
Heavy rainfall all year
Higher precipitation in certain seasons
A balance of warm summers and cool winters
Direct sunlight throughout the year
Moderate temperatures and seasonal variation
Why is it difficult for trees to grow in the tundra?
Humans causing deforestation leads to mass death of trees
Wildfires and inconsistent rain hurts tree growth
A cold layer of permafrost and limited rainfall does not support trees
Animals eat all the leaves which makes it impossible for the species to reproduce
Why doesn't photosynthesis occur in deep ocean water?
There is no sunlight.
The water temperature is too cold.
There are not enough nutrients.
The salinity level of the water is too high.
Freshwater ecosystems include all of the following except:
salt marshes
swamps
lakes
rivers
Freshwater ecosystems include all of the following EXCEPT
slat marshes
swamps
lakes
rivers
Which of the following two biomes receive the least amount of precipitation?
Tropical Grassland
Tropical Desert
Tundra
Taiga
Temperate Forest
What do many birds that live in the temperate deciduous forest do in order to survive the winters?
migrate
hibernate
hide underground
build a plastic nest
These birds are all closely related. What would be the most likely reason for the difference in beak shape?
The beaks are adapted to fit into different nest sizes
The beaks are adapted to eat different types of foods
The beaks are adapted to fend off different predators
The beak size and shape are random throughout different species
In which biome would you expect to find an area with an average temperature of 10°C and 100 cm of precipitation annually?
Tundra
Temperate seasonal forest
Temperate rainforest
Boreal forest
What kind of adaptations might plants have in an area with strong winds and high exposure, such as on a mountainside?
Brightly colored flowers to attract pollinators
Tall, thin trunks to compete for light
Broad, flat leaves to catch sunlight
Low growth and strong root systems to hold the plants in place
What is the primary role of an indicator species in an ecosystem?
To control the population of invasive species
To serve as a keystone species
To act as a top predator in the food chain
To provide valuable information about the environmental health of the ecosystem
When discussing biodiversity, researchers often distinguish between species richness and species evenness. Which of the following best describes the concept of species evenness?
The total number of species in an ecosystem.
The distribution of species abundance within an ecosystem.
The variety of ecosystems within a region.
The genetic diversity within a single species.
Researchers often use the term "biodiversity" to describe the variety of life forms within a specific ecosystem. Which of the following best defines biodiversity?
The number of different species in an ecosystem.
The genetic diversity within a single species.
The variety of ecosystems in a geographic region.
The total biomass of all living organisms in an ecosystem.
what determines carrying capacity
