TEKS Grade 5 Science - 5.9 Diagnostic Ecosystems
Quiz by Grade 5 Science - Texas Education Agency
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- Q1
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?
By returning nutrients to the soil
By making space for new animals
By releasing oxygen into the air
By decreasing the population of herbivores
30s5.9a - Q2
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?
Fact 4
Fact 1
Fact 2
Fact 3
30s5.9a - Q3
In fall and winter many trees lose their leaves in response to cooler temperatures and —
more direct sunlight
fewer hours of daylight
a decrease in average wind speed
an increase in humidity
30s5.9a - Q4
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?
The mice would become the new producers
The number of mice would increase.
All the animals would either die or move away.
All the animal populations would increase.
30s5.9b - Q5
Which is an example of a decomposer?
a mushroom
a flower
a hawk
a mouse
30s5.9b - Q6
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?
The water supply in the area increases.
Weather patterns in the area change.
The number of other plants increases.
The variety of native plants decreases.
30s5.9c - Q7
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?
The population of predators that eat prairie dogs will decrease.
The population of plants that prairie dogs eat will decrease.
The nutrients in the soil will increase.
The number of underground tunnels will increase.
30s5.9c - Q8
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?
By causing other animals to reproduce more
By eating foods that no other animals eat
By competing with other animals for food
By moving slower than most other animals
30s5.9c - Q9
Scientists think that dolphins and whales may have evolved from a common ancestor. What evidence supports this hypothesis?
They live in the same area of the ocean
They have similar anatomies.
They swim the same way.
They eat the same food.
30s5.9d - Q10
Which would indicate that a series of fossils represent the evolution of the horse?
All of the fossils show similar structures to that of the modern horse.
All of the fossils were located in the same place on Earth as horses.
All of the fossils were found in the same layers of rocks as horse fossils.
All of the fossils are completely identical to horse bones.
30s5.9d
