
TEKS Grade 5 Science - 5.9 Diagnostic Ecosystems
Quiz by Grade 5 Science - Texas Education Agency
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Some beetles break down the remains of dead animals. Some mushrooms break down the remains of dead trees. How do these actions most benefit plants?
Some facts about a bird called the painted redstart are listed in the box shown below. Which fact best describes one way this bird changes its environment to meet its needs?

In fall and winter many trees lose their leaves in response to cooler temperatures and —
The food web below is made up of organisms that live in a forest. Which change would most likely occur if all the producers in this ecosystem were removed?

Which is an example of a decomposer?
The picture below shows a type of plant called kudzu. Kudzu is a fast-growing Asian vine that was introduced into the United States. Kudzu quickly uses available resources and can completely cover the plants in an area. What effect does the rapid growth of kudzu most likely have on an ecosystem?

Prairie dogs eat plants and dig underground tunnels. Prairie dog tunnels help break up hard prairie soils, and the animals’ waste adds nutrients to the soil. In the past, large groups of prairie dogs lived in many parts of the U.S. Great Plains, but people have destroyed most of these colonies. Which of these will most likely happen when prairie dogs are removed from an area?

Wild Texas hogs, similar to the one shown, are descended from hogs brought here from other countries. These wild hogs eat many different kinds of foods, including plants, fungi, and insects. Besides being very destructive to the habitats of other animals, how do wild hogs most likely harm other animals?
Scientists think that dolphins and whales may have evolved from a common ancestor. What evidence supports this hypothesis?
Which would indicate that a series of fossils represent the evolution of the horse?