Life Unit Quiz #3 (Food webs and Ecosystems)

Plants interact with living and nonliving components in their environment. Which of the following is an interaction between the plant and a nonliving element?

• Small insects eating the stems of the plants

• Humans breathing oxygen released by plants

• Bees gathering pollen from flowers of plants

• Sandy soil holding the roots of the plants

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Which of these is an example of one living thing depending on another living thing?

• Cat walking on the sand

• Bird building a nest in a tree

• Dog warming in the sunlight

• Squirrel drinking water

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If the population of prey increases, the population of predators will ________because of the availability of food.

• decrease
• stay the same
• increase

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A meadow has too many rabbits. What would help balance this ecosystem?

• more rain that grass needs
• more foxes that eat rabbits
• fewer foxes that eat rabbits
• more grass for the rabbits to eat

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Which example shows a relationship between a living thing and a non-living thing?

• An insect is food for salmon.
• Water carries a rock downstream.
• A tree gets nutrients from the soil.
• A flower makes food for a butterfly.

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Which of the following is not an example of a limiting factor?

• Happiness
• Space
• Predators
• Food

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Mushrooms are helping to break down the remains of a rotting log in the forest. how do the actions of the mushrooms benefit the other plants in the area?

• By returning nutrients to the soil.
• By releasing oxygen into the air.
• By making space for new animals.
• By decreasing the population of herbivores.

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Prairie dogs build their homes by digging tunnels underground. sometimes, when they leave, other animals use these areas for shelter. which of the following environmental conditions would best meet the needs of a prairie dog?

• Cool temperatures
• Limited sunlight
• Soft, loose soil
• Few plants and trees

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Some plants have seedpods that stick to animal fur. Why is this kind of seedpod helpful to plants?

• the seedpods get food from animal fur.
• The seedpods are kept warm by animal fur.
• The animal carries the seedpods to an area where a new plant has space to grow.
• The animal helps the seedpods mix with pollen from another plant.

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Which fact below is an example of the fiddler crab changing its environment to meet its need?

• It moves sideways.
• It digs burrows in the ground to hide.
• It sheds its shells as it grows.
• All of the above.

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