STAAR Tutoring: Food Webs, Competition, Biodiversity

Which of the following is NOT a producer in this food web?

• grass

• shrub

• fungi

• tree

In this food web, which 2 animals will compete for the same source of energy (food)?

• grasshopper and rabbit

• deer and insect-eating bird

• shrew and squirrel

• snake and grasshopper

Which animal in this food web gets its energy INDERECTLY from the tree?

• deer

• rabbit

• grasshopper

• hawk

The berries and plantain are best known as

• producers

• primary consumers

• secondary consumers

• decomposers

Which of the following organisms will have the most available energy? (Think of the energy pyramid; who is at the bottom?)

• mouse

• butterfuly

• fox

• berries

Using the food web provided, which of the following CORRECTLY shows a path that energy would flow through this ecosystem?

• mouse --> buzzard --> fox

• plantain --> grasshopper --> frog

• berries --> plantain --> rabbit

• plantain --> titmouse --> mouse --> buzzard

What will both the rat and goat compete for?

• a rabbit

• the owl

• a tomato plant

• nothing

In the following food chain:

tomato plant --> rat --> wildcat --> lion,

the wildcat is best known as a

• producer

• primary consumer

• decomposer

• secondary consumer

What would happen if the rat population rapidly decreased?

• the rabbit population would also decrease.

• the owl and rattlesnake populations would decrease.

• the owl population would increase.

• the wildcat would not have any food to eat.

How much energy is transferred from one organism to another?

• only 10%

• all of it, 100%

• only 50%

• 20%