LS 5 and 9 Review

Science 7 Review- LS 5&9

By Colton Stinson

Biotic/Abiotic & Environmental Changes

By Nicole Mitchell

Multiple Choice

Why are producers found at the base of the pyramid?

• They create all of the energy and therefore have the most energy of all of the trophic levels
• There are more plants than animals. 
• They begin the flow of energy in an ecosystem.
• All of these answers are correct. 

Multiple Choice

The diagram represents a pyramid of energy in an ecosystem.  Which level would most likely contain members of the plant kingdom?

• A
• B
• C
• D

Multiple Choice

In the energy pyramid below, which organism has the least amount of energy available?

• Producers
• Herbivores
• Carnivores
• Top Predator

Multiple Choice

In the energy pyramid here, how much of the energy in the producers gets passed to the herbivores?

• 10%
• 20%
• 80%
• 90%

Multiple Choice

An organism that needs to eat other organisms to obtain energy is known as a:

• Autotroph
• Producer
• Consumer
• Mutualist

Multiple Choice

Where do producers get their energy? 

• soil
• decomposers
• sun
• garbage

Multiple Choice

Which organism recieves the least amount of energy from the producer?

• Owl
• Grasshopper
• Lilypad
• Mouse

Multiple Choice

Only eats plants

• omnivore
• carnivore
• herbivore
• tertiary consumer

Multiple Choice

What are plants called in a food chain?

• Producers
• Consumers
• Decomposers
• Scavengers

Multiple Choice

Where does the energy start in this food chain?

• Plant
• Sun
• Deer
• Wolf

Multiple Select

Click on the image to make it larger-- Choose all that apply: The hawk gets energy from...

• mouse

• rabbit

• wildflowers

• snake

Multiple Select

Click on the image to make it larger-- Choose the living things that are producers...

• wildflowers

• rabbit

• snake

• grass

Multiple Select

Click on the imgae to make it larger-- Choose the herbivores in the food web....

• hawk

• mouse

• rabbit

• snake

Multiple Choice

Which of these organisms would receive energy from the snake?

• Plant
• Rabbit
• Mouse
• Hawk

Multiple Choice

If the snake population decreased, which populations would increase as a result?

• Birds and Frogs

• Hawks and Frogs

• Birds and Hawks

• Frogs and Butterflies

Multiple Choice

The ___% rule states that only ____% of energy is transferred to the next trophic level.

• 10%
• 25%
• 50%
• 100%

Multiple Choice

Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?

• There would be a decrease in the small bird population.
• There would be a decrease in the grass/flowers population.
• There would be a decrease in the mice population.
• There would be an increase in the grass/flowers population.

Multiple Choice

What may happen if the snowshoe hare was removed from the food web pictured?

• The insects in the habitat would increase.
• The shrew population would decrease due to being only hawk food source.
• The willow tree population would decrease.
• Foxes would dies due to no food source. 

Multiple Choice

Why might an organism have more than one arrow coming from them in a food web?

• More than one organism may eat them. 
• They may eat more than one other organism. 
• This organism gets its energy from multiple sources. 
• They have no resources available to them.

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.

Water Cycle

Carbon Cycle

Multiple Choice

Carbon exists in all of the following except:

• Plants & Animals

• Fossil Fuels, Soils, & Sediments

• Earth's Atmosphere & Oceans

• All of the option contain Carbon.

Multiple Choice

Which of the following is an example of a decomposer?

• Owl
• Fish
• Tree
• Mushroom

Multiple Choice

Which of the following processes releases Carbon into the atmosphere?

• Combustion (burning fossil fuels)

• Photosynthesis

• Diffusion

Multiple Choice

Why does decomposition release carbon dioxide into the atmopshere?

• Living things die and break down returning their carbon to the atmosphere

• Living things break down while still living

• Living things that die turn into fossil fuels which cannot be burned

• This process takes food (sugar) and converts it into usable energy and releases carbon dioxide

Multiple Choice

Which process converts carbon in the form of sugar into carbon dioxide gas?

• Bioremediation
• Photosynthesis
• Cellular Respiration

• Transpiration

Multiple Choice

Which of the following removes carbon from the atmosphere?

• Combustion
• Cellular Respiration

• Photosynthesis
• Decomposition

Multiple Choice

Plants use ____________ to make their own food

• Water

• Sunlight

• Carbon dioxide

• All of these

Multiple Choice

Why does the process of diffusion absorb carbon from the atmosphere?

• decaying organic materials turn into fossil fuels

• plants take in carbon dioxide and sunlight to make their own food

• bodies of water take in carbon dioxide from outer space

• Bodies of water take in carbon dioxide form the air

Multiple Choice

If the plant population decreased, the amount of carbon in the atmosphere would _________.

• Stay the same

• Increase

• Decrease

Multiple Choice

How is the burning of fossil fuels related to global warming?

• Magic
• Fuels are hot
• Greenhouse effect
• Photosynthesis

Multiple Choice

All of the carbon in existence is continually recycled in the carbon cycle

• True
• False