5.9A,B,C

All of the following are examples of living things interacting with each other EXCEPT ---

• birds preying on insects living in the grass

• squirrels spreading the seeds of trees by burying them

• fish eating plants and other smaller fish

• frogs sleeping in the mud at the bottom of the pond

Plants interact with living and nonliving components in their environment. Which is an interaction with a nonliving component?

• small insects eating the stems of plants

• humans breathing oxygen releasesd by plants

• bees gathering pollen from flowers of plants

• sandy soil holding the roots of plants

Which of the following is a nonliving component of an ecosystem?

• bacteria

• plants

• water

• fungi

Which adaptation of a cactus is related to its interactions with living organisms in its environment?

• roots that grow deep underground to reach water

• large, expendable stems that allow it to store water

• waxy outer coating to prevent the loss of water

• spines to protect it from animals that want its stored water

Which of the following is a question that could be asked in a scientific investigation of how organisms depend on their environment?

• How does temperature affect the formation of soil?

• What time of day produces the most precipitation?

• What is the effect of rainfall on the growth of plants?

• How fast does water erode different types of rocks?

Green plants are producers that begin the flow of energy bewteen organsims in a food web when they ---

• reproduce by generating seeds

• absorb water and nutrients from soil

• release oxygen into the atmosphere

• make their own food using sunlight

Mold, fungi, and some types of bacteria are classified or grouped as decomposers. What is the role of a decomposer in a food web?

• to break down dead organisms and return nutrients into the soil

• to use sunlight and water to produce their own food

• to release oxygen into the atmosphere for respiration

• to provide the energy animals need for food

The diagram shows a pond food web. What two organisms get their energy directly from insect larvae?

• algae and minnows

• sunfish and bass

• minnows and sunfish

• snails and snapper turtles

The diagram shows a woodlands food chain. What is the role of the tree in the food chain?

Sun -->Tree-->Squirrel-->Hawk

• to make energy available directly to the hawk

• to use the suns energy to produce food

• to break down waste products left by squirrels

• to provide a place for the hawk to build its nest

The prairie food web illustrated here has producers and consumers. In this food web, how many more consumers than producers are there?

• 2

• 5

• 7

• 9