Ch. 18 Review

Ch. 18.1 Abiotic factors

Which term refers to the nonliving things in an ecosystem?A. climate factorsB. biotic factorsC. abiotic factorsD. atmospheric factors

Which term refers to the nonliving things in an ecosystem?A. climate factorsB. biotic factorsC. abiotic factorsD. atmospheric factors

Which of the following gases make up 78% of Earth’s atmosphere?A. OxygenB. Carbon DioxideC. NitrogenD. Water vapor

Which of the following gases make up 78% of Earth’s atmosphere?A. OxygenB. Carbon DioxideC. NitrogenD. Water vapor

Which of the following is a biotic factor?A. AtmosphereB. SunlightC. WaterD. Bacteria

Which of the following is a biotic factor?A. AtmosphereB. SunlightC. WaterD. Bacteria

Which of the following abiotic factors is needed for important life processes, such as releasing energy and photosynthesis?

A. AtmosphereB. SunlightC. WaterD. Soil

Which of the following abiotic factors is needed for important life processes, such as releasing energy and photosynthesis?

A. AtmosphereB. SunlightC. WaterD. Soil

Ch. 18.2 Cycles of Matter

What is the energy source for the water cycle, causing water to evaporate?

A. The oceanB. The sunC. HumansD. The wind

What is the energy source for the water cycle, causing water to evaporate?

A. The oceanB. The sunC. HumansD. The wind

What process releases water from the leaves of plants?A. EvaporationB. TranspirationC. CondensationD. Precipitation

What process releases water from the leaves of plants?A. EvaporationB. TranspirationC. CondensationD. Precipitation

Which process involves bacteria converting atmospheric nitrogen to a form organisms can use?

a. Nitrogen Absorptionb. Nitrogen Fixationc. Nitrogen Retentiond. Nitrogen Stabilization

Which process involves bacteria converting atmospheric nitrogen to a form organisms can use?

a. Nitrogen Absorptionb. Nitrogen Fixationc. Nitrogen Retentiond. Nitrogen Stabilization

How are nitrogen compounds in organisms returned to the soil?a. Decomposition and wasteb. Exhalation c. Cellular respirationd. Nitrogen fixation

How are nitrogen compounds in organisms returned to the soil?a. Decomposition and wasteb. Exhalation c. Cellular respirationd. Nitrogen fixation

The main reason for adding manure to a garden is to increase…a. Carbonb. Nitrogenc. Oxygend. Water

The main reason for adding manure to a garden is to increase…a. Carbonb. Nitrogenc. Oxygend. Water

Why do organisms need Nitrogen?

a. To release energyb. An essential part of proteins & DNAc. Important life processes such as growing

and reproducingd. To create energy rich sugars

Why do organisms need Nitrogen?

a. To release energyb. An essential part of proteins & DNAc. Important life processes such as growing

and reproducingd. To create energy rich sugars

During which process is oxygen gas released into the atmosphere?a. Chemosynthesisb. Decompositionc. Photosynthesisd. Transpiration

During which process is oxygen gas released into the atmosphere?a. Chemosynthesisb. Decompositionc. Photosynthesisd. Transpiration

What is created as a result of cellular respiration, which is also known as a cell’s energy source?

a. Light energyb. ATPc. Glucosed. Carbohydrates

What is created as a result of cellular respiration, which is also known as a cell’s energy source?

a. Light energyb. ATPc. Glucosed. Carbohydrates

What gas do animals release back into the atmosphere as a result of cellular respiration?

a. Carbon dioxideb. Oxygenc. Nitrogend. Methane

What gas do animals release back into the atmosphere as a result of cellular respiration?

a. Carbon dioxideb. Oxygenc. Nitrogend. Methane

During the carbon cycle, ____ take in carbon dioxide from the atmosphere.a. Detritivoresb. Consumersc. Decomposersd. Producers

During the carbon cycle, ____ take in carbon dioxide from the atmosphere.a. Detritivoresb. Consumersc. Decomposersd. Producers

What two things are required for cellular respiration to take place?a. Light energy and waterb. Oxygen and waterc. Glucose and oxygend. Glucose and carbon dioxide

What two things are required for cellular respiration to take place?a. Light energy and waterb. Oxygen and waterc. Glucose and oxygend. Glucose and carbon dioxide

Which process adds carbon dioxide to the atmosphere by burning fossil fuels?

a. Cellular respirationb. Decompositionc. Combustiond. Mining

Which process adds carbon dioxide to the atmosphere by burning fossil fuels?

a. Cellular respirationb. Decompositionc. Combustiond. Mining

Ch. 18.3 Energy in Ecosystems

Which process enables producers to use chemical energy instead of light energy to make food?

a. Chemosynthesisb. Decompositionc. Photosynthesisd. Consumption

Which process enables producers to use chemical energy instead of light energy to make food?

a. Chemosynthesisb. Decompositionc. Photosynthesisd. Consumption

What happens to the amount of available energy when it is transferred from one organism to another?

a. It remains the sameb. It increasesc. It is destroyedd. It decreases

What happens to the amount of available energy when it is transferred from one organism to another?

a. It remains the sameb. It increasesc. It is destroyedd. It decreases

What description should go next to the drawing of grass to complete the food chain?

A. The zebra eats grass. B. Scavengers, such as vultures, eat grass.C. Grass is decomposed by sunlight and water. D. Grass grows by absorbing nutrients from the soil.

What description should go next to the drawing of grass to complete the food chain?

A. The zebra eats grass. B. Scavengers, such as vultures, eat grass.C. Grass is decomposed by sunlight and water. D. Grass grows by absorbing nutrients from the soil.

Where are the producers found in the energy pyramid?a. Top levelb. Middle levelc. Bottom leveld. They are not in the pyramid

Where are the producers found in the energy pyramid?a. Top levelb. Middle levelc. Bottom leveld. They are not in the pyramid

Drought kills 70% of the plants in an ecosystem. How might this affect other organisms in the ecosystem?

a. Herbivores will starveb. Producers will leave the areac. Decomposers will starved. Scavengers will starve

Drought kills 70% of the plants in an ecosystem. How might this affect other organisms in the ecosystem?

a. Herbivores will starveb. Producers will leave the areac. Decomposers will starved. Scavengers will starve

Where do decomposers get their energy?

a. From photosynthesisb. From the remains of producersc. From eating other living thingsd. From the remains of living things

Where do decomposers get their energy?

a. From photosynthesisb. From the remains of producersc. From eating other living thingsd. From the remains of living things

In the food web below, which organism is an apex predator?

a. Birdb. Grasshopperc. Owld. Grains

In the food web below, which organism is an apex predator?a. Birdb. Grasshopperc. Owld. Grains

In the food web below, what do the arrows show?

a. Which food is being eatenb. The direction energy is flowingc. Which organism is a predatord. The direction matter is flowing

In the food web below, what do the arrows show?a. Which food is being eatenb. The direction energy is flowingc. Which organism is a predatord. The direction matter is flowing

In the food web below, which organism would have 100% of available energy?

a. Birdb. Grasshopperc. Owld. Grains

In the food web below, which organism would have 100% of available energy?

a. Birdb. Grasshopperc. Owld. Grains