June 2022 Living Environment Regents Questions 21-30 Question Preview (ID: 59685)

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A new species of floating photosynthetic algae was accidently introduced into a pond ecosystem. It gradually replaced all the original algal species. A possible reason for the replacement could be that the new species

a) outcompeted the original algae populations for prey present in the ecosystem

b) required more resources than the original algae populations in the pond

c) outcompeted the original algae populations for abiotic factors

d) is less adapted to the pond ecosystem than the original algae populations

Which statement best explains the purpose of the microorganisms in this aquarium?

a) Microorganisms recycle nutrients that support the ecosystem.

b) Microorganisms recycle the energy in this ecosystem.

c) Microorganisms are a source of food for the plant.

d) Microorganisms are an abiotic factor important for decomposition.

A group of organisms from the food web that would be found at level X of the energy pyramid is the

a) owls

b) deer

c) trees

d) crickets

The arguments made by both sides provide evidence that

a) genetic technology is the best way to correct the damage humans have done to the environment

b) the introduction of genetic technology will benefit all organisms equally

c) any new technology that increases the biodiversity of the area should be used

d) the use of new technology requires decisions based on an assessment of costs, benefits, and risks

Which row in the chart below shows the connection between processes, structures, and hormones involved in the formation of an embryo?

a) 1

b) 2

c) 3

d) 4

Which statement regarding this finding is supported by the study?

a) Mercury pollution will result in the extinction of all songbirds.

b) Mercury prevents songbirds from obtaining required nutrients.

c) Human activities usually affect the smallest animals in ecosystems.

d) Human activities can have negative effects on a species.

Which human activity would most likely result in a decrease in the size and number of dead zones?

a) irrigating fields and lawns to increase runoff into the ocean and rivers

b) building more coal-fired electrical generating plants

c) reducing the use of chemicals on farm fields and golf courses

d) constructing more sewage-treatment plants on the shores of lakes and rivers

The relationship between fire ants and groundnesting birds is an example of

a) producer/consumer

b) predator/prey

c) scavenger/decomposer

d) parasite/host

When an altered ecosystem is left undisturbed, the most likely result would be

a) the gradual evolution of all of the original species

b) a rapid return to the original ecosystem

c) the elimination of all of the predator species

d) a gradual shift toward a stable ecosystem

Information that scientists are able to obtain from the fossil record includes

a) confirmation that Earth is 4.5 million years old

b) data supporting the hypothesis that animal species do not change over time

c) the exact means by which life on Earth began

d) evidence about past environments and the history of life

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