Ecosystems Review

Where do all life forms get their energy?

• Earth's Core
• Water
• Plants
• The Sun

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.

What does a food chain represent?

• How all living organisms within a habitat are connected.
• All of the things that a particular animal eats.
• How plants create their own food.
• A single path of energy transfer within a habitat.

An energy pyramid represents what?

• How much sunlight is available for the ecosystem to use. 
• How much energy a particular organism needs. 
• How much energy is needed to build a pyramid. 
• The amount of energy available to the next 'feeder' in a food web.

The CO2/O cycle is important to animals because it provides

• a gas they take in when breathing
• chemicals that build bones
• energy they need to move
• fresh water for their survival

In this food chain, what will happen if the frogs become extinct?

• The snakes will increase.
• The grasshoppers will decrease.
• The eagles will remain the same.
• The grasshoppers will increase.

Which of the following organisms is a herbivore.

• butterfly
• snake
• fox
• ladybird

Which of the following organisms is a carnivore.

• greenfly

• plant

• mouse

• buzzard

The owl receives energy from which organisms?

• grasshopper and mouse
• mouse and rabbit
• rabbit and butterfly
• butterfly and frog

An animal that gets energy from eating both plants and animals is a(an) _____________.

• herbivore
• carnivore
• omnivore
• autotroph