Unit 12: Living Systems Review

What is a food web?

• A diagram showing the amount of energy in an ecosystem

• A network of interconnected food chains

• A list of all the animals in an ecosystem

• A map of an ecosystem

Tags

VA.4.3.b

Which of the following best describes a community in an ecosystem?

• A group of the same species living in an area

• Different populations living together in an area

• The non-living components of an area

• A single organism

Tags

VA.4.3.a

How many herbivores are in this web?

• 1
• 2
• 3
• 4

Tags

NGSS.MS-LS2-2

What role do producers play in a food web?

• They consume other organisms

• They produce energy from sunlight

• They decompose dead material

• They are the top predators

Tags

VA.4.3.b

What is the primary source of energy for most ecosystems?

• Water

• The Sun

• Soil

• Wind

Tags

VA.4.3.b

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.

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

To a trout, a stream would be its . . .

• habitat

• niche

• ecosystem

• community

Which of the following is an example of a population?

• All the fresh water bass in a pond

• All the animals in a forest

• All the plants in a forest

• All the rocks in a river

Tags

VA.4.3.a

What is the purpose of a food web?

• To show the flow of energy in an ecosystem

• To list all the plants in an ecosystem

• To show the water cycle

• To map the geography of an area

Tags

VA.4.3.b

How can changes in an organism's habitat affect its life cycle?

• It will always increase the organism's lifespan

• It may alter the stages of its life cycle

• It will have no effect on the organism

• It will always decrease the organism's lifespan

Tags

VA.4.3.c