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Worksheets1st 9 Weeks Science Review
Total questions: 52
Worksheet time: 34mins
The diagram above represents relationships in an
ecosystem. What is the primary source of energy in
this environment?
cellular respiration in the plants
energy from minerals in the soil
fossil fuels
solar energy
What is one of the best ways to represent the
interdependence of all of the organisms in an
ecosystem?
a cell model
a food chain
a diagram of the water cycle
a food web
Producers are generally found at the beginning of a
food chain. Which statement best explains why this
is true?
Producers are usually smaller in size than
consumers.
Producers do not rely on other organisms for
food.
There are always more consumers than
producers in food chains.
Consumers are always more complex
organisms than producers.
An invasive species, the spiny water flea, was
recently found in a New York lake. These water fleas
eat zooplankton, a food also consumed by native
fishes. The fleas spread from lake to lake by
attaching to fishing lines, anchor ropes, and boats.
Which statement best describes the effect of the
water flea on the lake?
It will not compete with animals in the local
food chain.
It will feed on organisms that are important
to other species.
The number of water fleas will decrease due to
a lack of food.
There will be no effect on native species in the
lake.
Many animals in an ecosystem depend on other animals for
air
energy
shelter
water
Which is not something an herbivore would eat:
trees
grass
mice
flowers
Which population in this food web would most likely be negatively affected by an increase in the mouse population
Snake
Rabbit
Wolf
Hawk
The energy for use by organisms in level A originally comes from
Producers
the sun
Level B
Level D
What will most likely occur if two different plant species compete for the same requirements in an ecosystem?
They will usually develop different requirements
One species may adapt to a different environment
One species may be eliminated from that ecosystem
They will alter the environment so that they can both survive in that ecosystem
Some of the energy taken in by an organism is not available to other organisms in a food web. Energy that is not available to other organisms in a food web is energy that is
Stored in the remains of a dead animal
Stored in eggs produced during sexual reproduction
Produced in muscle tissue during the growth of an organism
Lost to the environment as heat
What percentage of energy is passed on to the next trophic level?
5%
10%
50%
90%
In some environments, wolves prey on deer for their source of food. If all of the wolves were taken from the environment, what would most likely happen to the deer population?
A The deer population would increase and begin to compete for food.
B The deer population would become larger and healthier animals.
C The deer population would decrease, because there would be an increase in disease.
D The deer population would change color, because they would not have to hide from wolves.
When brown tree snakes were accidentally introduced onto the island of Guam, they had no natural predators. These snakes sought out and ate many eggs of insect-eating birds. What probably occurred following the introduction of the brown tree snakes?
The insect population began to seek a new food source.
The bird population increased.
The bird population began to seek a new food source.
The insect population increased
What is a producer?
an organism that gets energy from eating other organisms
an organism that uses sunlight or chemical energy to make its own food
an organism that gets energy from eating dead organisms, non-living material or waste
An organism that gets energy from eating other organisms is a ______________.
producer
consumer
decomposer
prey
Which of the following organisms in competition with the weasel for their food source?
grass
rabbit
fox
snake
What would happen to the rabbit population if the fox population moved out of the area represented by the food web?
The rabbit population would increase
The rabbit population would decrease
The rabbit population would neither increase nor decrease
In the food chain seen here, what would happen if the caterpillar population was infected with a disease?
The Treecreeper population would increase
The Caterpillar population would increase
The Oak Tree leaf population would increase
The Oak Tree leaf population would decrease
Jaime has noticed that her large population of cats on her property all only want to eat the same type of small brown mouse. Why will her cat population likely decrease over the next few years?
Cats will be competing for space
Cats will be competing for oxygen
Cats will be competing for sunlight
Cats will be competing for food
Which biome has the lowest average temperatures?
Arctic tundra
Boreal forest (taiga)
Freshwater pond
Coastal desert
Populations of different species that live in the same area
Ecosystem
Community
Population
Biome
the middle level, where the consumers are
Chlorophyll is:
The substance that makes plants green.
Found inside the chloroplast cells.
Used to absorb energy from the sun.
All of the above.
The openings that are found in the leaves of plants are called:
Stomata
Chlorophyll
Xylem
Chloroplast
The process of photosynthesis takes place in the:
Leaves of the Plant.
Stem of the plant.
Roots of the plant.
All of the above.
What is produced as a result of photosynthesis?
glucose and chlorophyll
water and light energy
glucose and oxygen
carbon dioxide and water
Select all that are products of Photosynthesis.
Water
Carbon Dioxide
Oxygen
Sunlight (Light Energy)
Glucose (Sugar/food)
What are the 3 reactants of photosynthesis? The reactants are the things needed for photosynthesis to occur.
oxygen, glucose, sunlight
sunlight, oxygen, water
water, oxygen, carbon dioxide
carbon dioxide, sunlight, water
What process is shown in this diagram?
reproduction
transpiration
respiration
photosynthesis
