R 5.4 Quiz over energy and ecosystems

A __________________ is a type of animal that hunts other animals to eat. 

• prey
• herbivore
• predator
• producer

A consumer gets energy by doing what?

• Making it themselves.
• Breaking down biotic wastes and dead organisms and returning raw materials to the ecosystem.
• Soaking it up from the ground.
• Feeding on other organisms.

A food chain is?

• Overlapping food chains in an ecosystem.
• The amount of energy that moves from one feeding level to another in a food web.
• A series of events in which one organism eats another and obtains energy.
• biotic and abiotic factors in an area.

Look at the diagram of the food web. The arrows means “eaten by.”

What will happen if the number of snakes goes down?

• The owl will eat the grass

• The number of frogs will go down

• The hawk and owl will have less food

• The number of mice and grasshoppers will go up.

In this food web, which of the following organisms eats the largest variety of different producers?

• Mouse

• Grasshopper

• Dragonfly

• Butterfly

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.

How much energy is available to be passed on to the next level in a food web?

• 100%

• 10%

• 50%

• 75%

If the snake population decreased, which group would increase in number?

• Producers

• Primary consumers

• Secondary consumers

• Tertiary consumers

• Decomposers

What is this an example of?

• Food chain

• Food web

• Energy pyramid

• Energy web

Which most likely caused the rabbit population (light green line) to decrease over the first time unit (0 to 1) in the graph?

• A disease in the rabbit population

• A decrease in the amount of grass available

• A decreasing population of hawks

• A higher population of snakes than normal