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WorksheetsGraves Bethlehem Regents Questions Topic 6
Total questions: 44
Worksheet time: 25mins
Many years ago, a volcanic eruption killed many plants and animals on an island. Today the island looks much as it did before the eruption. Which statemnt is the best possbile explanantion for this?
Altered ecosystems regain stability through the evolution of new plant species
Destroyed environments can recover as a result of the process of ecological succession.
Geographic barriers prevent the migration of animals to island habitats
Destroyed ecosystems always return to their original state
A fire burns an oak forest down to bare ground. Over the next 150 years, if the climate remains constant, this area will most likely
remain bare ground
return to an oak forest
become a rain forest
become a wetland
What impact do the amounts of available energy, water, and oxygen have on an ecosystem?
They act as limiting factors
They are used as nutrients
They recycle the residue of dead organisms
They control environmental temperature
Nutritional relationships between organisms are shown in the diagram below. The mouse population would most likely decrease if there were
an increase in the frog and tree populations
a decrease in the snake and hawk populations
an increase in the number of decomposers in the area
a decrease in the amount of available sunlight
In the diagram below, what does X most likely represent?
autotrophs
herbivores
decomposers
carnivores
Which diagram best illustrates the relationship between humans (H) and ecosystems (E)?
1
2
3
4
For Questions 8-10 base your answers on the accompanying passage and your knowledge of biology.
Which group contains decomposers?
A
B
C
D
For Questions 8-10 base your answers on the accompanying passage and your knowledge of biology.
Which food chain best represents information in the passage? (Remember the arrow points in the direction that the energy flows prey > predator)
lupine > Karner Blue larvae > wasps
wasps > Karner Blue larvae > lupine
Karner Blue larvae > lupine > wasps
lupine > wasps > Karner Blue larvae
For Questions 8-10 base your answers on the accompanying passage and your knowledge of biology.
The Karner Blue larvae belong to which group
A
B
C
D
What would most likely happen if most of the bacteria and fungi were removed from an ecoystem?
Nutrients resulting from decomposition would be reduced
Energy provided for autotrophic nutrition would be reduced.
The rate of mutation in plants would increase
Soil fertility would increase
Which level of the energy pyramid below would contain the plan species of a salt marsh?
A
B
C
D
The graph below shows the effect of moisture on the number of trees per acre of five tree species. Which observation best represents information shown in the graph.
All five species grow in the same habitat
The American elm grows in the widest range of moisterure conditions
Red oaks can grow in wetter conditions than black willows.
Sugar maples can grow anywhere black oaks can grow.
The growth of a population is shown in the graph below. Which letter indicates the carrying capacity of the environment for this population?
A
B
C
D
Ten breeding pairs of rabbits are intorduced onto an island with no natural predators and a good supply of water and food. What will most likely happen to the rabbit population?
It will remain relatively constant due to equal birth and death rates
It will die out due to an increase in the mutation rate.
It will increase until it exceeds carrying capacity.
It will decrease and then increase indefinitely.
The ecological niches of three bird species are shown in the diagram below. What is is the advantage of each bird species having a different niche?
As the birds feed higher in the tree, available energy increases
More abiotic resources are available for each bird.
Predators are less likely to feed on birds in a variety of locations
There is less competition for food
Two closely related species of birds live in the same tree. Species A feeds on ants and termites, while species b feeds on caterpillars. The two species coexist successfully because
each occupies a different niche
they interbreed
they use different methods of reproduction
birds compete for food
Energy for this ecosystem originally comes from
water
consumers
sunlight
plants
What impact do the amounts of available energy, water, and oxygen have on an ecosystem?
They act as limiting factors.
]They are used as nutrients.
They recycle the residue of dead organisms.
They control environmental temperature.
Which sequence shows increasing complexity of levels of ecological organization?
biosphere, ecosystem, population, community,
population, biosphere, community, ecosystem
population, community, ecosystem, biosphere
ecosystem, population, biosphere, community
Great horned owls and red-tailed hawks have similar requirements for food, space, and nesting materials. What would most likely be the result of great horned owls and red-tailed hawks living in the same community?
ecological succession
competition
habitat destruction
parasitism
Organisms that can make their own food are called
consumers
heterotrophs
detrivores
autotrophs
An organism that eats both plants and animals is a
carnivore
herbivore
omnivore
detrivore
Which of these is an abiotic factor?
Bacteria
Sunlight
Worms
Algae
Which statement concerning an ecosystem is correct?
It can exist with or without a constant source of energy input.
It must contain consumers but can exist without producers.
It involves interactions between biotic and abiotic factors
It can exist on land, but it cannot exist in lakes, rivers, or oceans.
The reason that organisms can not produce populations of unlimited size is that
the resources of Earth are finite
there is no carrying capacity on Earth
species rarely compete with one another
interactions between organisms are unchanging
Which statement best explains why the population stabilized?
Interbreeding between members of the population increased the mutation rate.
The population size became limited due to factors such as availability of food.
An increase in the chipmunk population caused an increase in the producer population.
A predator species came to the area and occupied the same niche as the chipmunks
An ecosystem will most likely remain stable if
it has more predators than prey
it has a high level of biodiversity
biotic factors decrease
finite resources decrease
Cutting down a rain forest and planting agricultural crops, such as coffee plants, would most likely result in
a decrease in biodiversity
an increase in the amount of energy recycled
a decrease in erosion
an increase in the amount of photosynthesis
Imported animal species often disrupt an ecosystem because in their new environment, they will most likely
eliminate the genetic variation of the autotrophs
increase the number of mutations in the herbivores
have no natural enemies
be unable to produce offspring
Vultures, which are classified as scavengers, are an important part of an ecosystem because they
hunt herbivores, limiting their populations in an ecosystem
feed on dead animals, which aids in the recycling of environmental materials
cause the decay of dead organisms, which releases usable energy to herbivores and carnivores
are the first level in food webs and make energy available to all the other organisms in the web
The sequence of stages leading from bare field to stage D best illustrates the process known as
replication
recycling
feedback
succession
What is the original source of energy for this food web?
chemical bonds in sugar molecules
enzymatic reactions
the Sun
chemical reactions of bacteria
The northern snakehead is a type of Asian fish that eats smaller fish and is adapted to a freshwater habitat.
The presence of these fish in American waters is of concern because it might offer too much competition to native
herbivores
predators
decomposers
producers
A rich variety of genetic material in an ecosystem will
reduce the biodiversity of the ecosystem
decrease the carrying capacity of the ecosystem
reduce the likelihood of future medical discoveries
increase the chances that some organisms will survive change
Two new wind turbines have recently been built within the Eiffel Tower in Paris. The power that these turbines generate will be enough to power the entire first floor of the tower, including the restaurants, shops, and exhibits. A benefit of using wind power as an alternative source of energy is that it
is nonrenewable, so additional resources will be depleted by tower businesses
is renewable, so it will decrease the environmental impact of the tower businesses
increases the use of resources that cannot be renewed in the future
decreases the amount of fossil fuels available for future generations
Each female house fly can lay approximately 500 eggs in a lifetime. She does this in several batches of about 75 to 150 eggs. Within a day, larvae (maggots) hatch from the eggs. They live and feed on organic material, such as garbage and feces. Scientists have calculated that a pair of flies beginning reproduction in April could be the ancestors of 191,010,000,000,000,000,000 flies by August.
Which statement best explains why this does not happen?
Mutations develop in the young flies.
Environmental factors keep the population in check.
Flies continue to reproduce in large numbers.
More female flies survive than male flies.
The two most likely factors contributing to the decline in the number of these 115 sparrows during year 1 were
favorable climate and a rapid reproduction rate
lack of predators and an expanding habitat
lack of mating and loss of nesting sites
disease and predation
