Cluster 8.11

          An earthworm farmer wanted to grow three species of earthworms, but earthworms can be very picky about the temperature, moisture, and pH balance of their soil. This graph shows the range of soil conditions preferred by three species of earthworms in an earthworm soil bed. 
          Which of these conditions would cause the most competition for the resources among the three species of earthworms?

• Very warm soil, ph of 6, and dry.
• Very cold soil, pH of 7, and high moisture.
• Moderate temperature, pH of 6.5, and moderate moisture.
• Moderate temperature, pH of 7.0, and high moisture.

(8.11A) How many organisms in this food web eat only producers? 

• 1
• 2
• 3
• 4

(8.11A) In the aquatic food web below, which two organisms have a predator-prey relationship?

• Shad and sturgeons
• Sturgeions and blue crabs
• Blue crabs and rangia clams
• Copepods and amphipods

Which two organisms are in a PRODUCER-CONSUMER relationship?

• Gray Wolf and Fruits
• Vole and Grass
• Elk and Coyote
• Elk and Gray Wolf

Which abiotic factor is phytoplankton most likely to compete for in a marine environment?

• Sunlight
• Fish
• Rocks

The graph shows the change in the deer population on an island for one year. According to the graph, what is the carrying capacity of the deer?

• Zero
• 10
• 80
• 100

A prey is....

• Something that hunts for its food
• something that only plants
• Something that gets hunted
•  Something that eats only meat

A predator is....

• Something that eats plants
• something that hunts for its food
• Something that gets hunted
• something that gets its energy from the sun

A producer is.....

• Something that only eats plants
• Something that only gets energy from the sun
• something that gets energy from consuming organic material
• something that eats other animals

Examine the diagram provided. Based on the diagram, which two organisms compete for food resources?

• Hawks and coyotes
• Coyotes and mountain lions
• Squirrels and hawks
• Mountain lions and antelopes