Topic 3 Energy Flow and Cycles

Multiple Choice

What is an organism?

• a plant or animal

• the process that gives plants food

• how a mushroom breaks down a tree

• none of these

Multiple Choice

An organism that can make its own food is called?

• Consumer
• Producer
• Decomposer
• Herbivore

Multiple Choice

Which process do plants use to turn sunlight into food energy?

• photosynthesis

• cellular respiration

• transpiration

• evaporation

Multiple Choice

What do producers need to make their own food?

• Water, carbon-dioxide and sunlight

• Water and decomposers

• Peanut butter and jelly.

Multiple Choice

Which organism must eat other living things for energy?

• Consumer

• Producer

• Decomposer

• Plants

Multiple Choice

Which organism breaks down dead plants and animals?

• Consumer

• Producer

• Decomposer

• Predator

Multiple Choice

A consumer that eats ONLY plants is a ___________________.

• Predator

• Omnivore

• Herbivore

• Carnivore

Multiple Choice

A consumer that eats ONLY other consumers is a ___________.

• Prey

• Herbivore

• Omnivore

• Carnivore

Multiple Choice

__________________ are consumers that eat BOTH Plants and Animals for food.

• Omnivores

• Producers

• Herbivores

• Carnivores

Multiple Choice

A connection of food chains with many food energy paths in an ecosystem is a ____________.

• ecosystem
• food web
• environment
• population

Multiple Choice

Which of the following is a herbivore?

• cricket
• frog
• hawk
• shrew

Multiple Choice

The arrows in a food chain or web represents what?

• They point to the organism that is being eaten.
• It shows how sunlight flows within an ecosystem.
• They show what direction the energy is flowing between organisms. 
• They represent how water is transferred within a habitat.

Multiple Choice

What percentage of energy is passed on to each tropic level?

• 10%
• 50%
• 90%
• 100%

Multiple Choice

What most likely happen first if you remove a primary consumer from the ecosystem?

• There would be more food for secondary consumers.

• The number of primary consumers would increase.

• The number of plants would increase.

• The number of secondary consumers would increase.

Multiple Choice

The grass that the mice eat contains energy. What is the source of energy for the grass?

• Rainwater

• The Sun

• The soil

• Minerals

Multiple Choice

Which species most likely has the largest population?

• Herring

• Phytoplankton

• Shrimp

• Shark

Multiple Choice

Identify each correct food chain that demonstrates the energy flow of this food web.

• Plant>Snail>Bluebird>Eagle
• Plant<Snail<Bluebird<Eagle
• Plant>Snail<Bluebird>Eagle
• Plant<Rabbit<Eagle

Multiple Choice

The process of turning liquid water into vapor (gas).

• Evaporation
• Water Cycle
• Solar Radiation
• Clouds

Multiple Choice

The process in which vapor turns into liquid water. 

• Condensation
• Evaporation
• Snowmelt
• Frozen Water

Multiple Choice

The process where plants absorb water through the roots and then give off water vapor through their leaves.

• Transpiration
• Respiration
• Oxygen
• Infiltration

Multiple Choice

The process by which carbon molecules are recycled in the biosphere using both biotic and abiotic factors.

• water cycle

• carbon cycle

• nitrogen cycle

• phosphorus cycle

Multiple Choice

What is the only process that removes carbon from the atmosphere?

• combustion

• cellular respiration

• photosynthesis

• decomposition

Multiple Choice

How do animals get nitrogen?

• eating other organisms

• the atmosphere

• rainwater

• lightning

Multiple Choice

After plants and animals contain nitrogen, what puts it back into atmosphere and soil?

• decomposition
• precipitation
• condensation
• bacteria

Multiple Choice

Carbon can be found in...

• The atmosphere
• Soil
• Fossil fuels
• All of the above

Multiple Choice

Consider the global nitrogen cycle depicted in the figure above. What is the limiting factor of the cycle for plants?

• industrial nitrogen fixation

• nitrogen lost to the atmosphere

• internal nitrogen cycling in the oceans

• nitrogen fixation by bacteria

Multiple Choice

Which of the following is the best conclusion that can be made from this graph?

• atmospheric carbon dioxide levels have been decreasing since 1960
• Hawaii has a lot of carbon dioxide
• humans have been working hard to decrease carbon dioxide levels
• atmospheric carbon dioxide levels have increased steadily since 1960