SNC1W Exam Review - Ecology

Which of the following best describes the difference between the biosphere and the hydrosphere?

• The biosphere includes all water on Earth, while the hydrosphere includes all living things.

• The biosphere includes all living organisms, while the hydrosphere includes all water on Earth.

• The biosphere is made up of rocks and minerals, while the hydrosphere is made up of gases.

• The biosphere is only found in the ocean, while the hydrosphere is only found on land.

Tags

SNC1W.B2.1

Which of the following is an example of a biotic factor in an ecosystem?

• Sunlight

• Soil

• Bacteria

• Water

Tags

SNC1W.B2.2

What is the main difference between a population and a community in an ecosystem?

• A population includes only abiotic factors, while a community includes only biotic factors.

• A population is made up of different species, while a community is made up of one species.

• A population is a group of individuals of the same species, while a community includes all the populations of different species in an area.

• A population includes all living and non-living things, while a community includes only non-living things.

Tags

SNC1W.B2.1

Which of the following best describes the optimal range for an abiotic factor in an ecosystem?

• The range where no organisms can survive.

• The range where organisms can survive, grow, and reproduce best.

• The range where only abiotic factors exist.

• The range where only one species can survive.

Tags

SNC1W.B2.2

Which of the following is the correct word equation for photosynthesis?

Tags

SNC1W.B2.3

How are photosynthesis and cellular respiration complementary processes in ecosystems?

• Both processes produce oxygen as a waste product.

• Photosynthesis removes carbon dioxide from the atmosphere, while cellular respiration returns it.

• Both processes use sunlight to create energy.

• Cellular respiration produces glucose, which is used in photosynthesis.

Tags

SNC1W.B2.3

Which of the following best describes bioaccumulation?

• The increase in the concentration of a substance as it moves up the food chain.

• The build-up of a substance in the tissues of an organism over time.

• The loss of biodiversity in an ecosystem.

• The process of photosynthesis in plants.

Tags

SNC1W.B2.5

What is the main difference between a food chain and a food web?

• A food chain shows only one path of energy flow, while a food web shows many interconnected paths.

• A food chain includes only producers, while a food web includes only consumers.

• A food chain is found only in aquatic ecosystems, while a food web is found only in terrestrial ecosystems.

• A food chain includes abiotic factors, while a food web does not.

Tags

SNC1W.B2.2

What is likely to happen if a top predator is removed from a food web?

• The population of its prey will decrease.

• The population of its prey will increase, possibly causing imbalances in the ecosystem.

• The number of producers will increase.

• There will be no effect on the ecosystem.

Tags

SNC1W.B2.5

Which of the following best describes primary succession?

• The gradual replacement of one community by another in an area where soil already exists.

• The establishment of a biological community in an area where no soil previously existed.

• The process of photosynthesis in plants.

• The increase in biodiversity in an ecosystem.

Tags

SNC1W.B2.2