Ecosystem Unit Review

Which group of organisms is the primary source of all food in an ecosystem?

• decomposers

• herbivores

• producers

• consumers

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Which of the following is a biotic factor shown in the picture?

• creek

• rock

• soil

• deer

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What would MOST LIKELY happen if an animal at the center of a food web suddenly died out?

• The other animals would learn to make their own food.

• The animals that depended on that animal for food would probably die out.

• The animals would turn into decomposers.

• No change would be seen.

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Amount of rainfall an area receives, soil conditions, and temperature are all examples of _______________.

• abiotic factors

• biotic factors

• ecosystem factors

• Producers

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An organism that uses energy from the sun to make its' own food is called a _________________.

• carnivore

• herbivore

• producer

• decomposer

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A consumer that eats only plants is called a _____________.

• omnivore

• herbivore

• carnivore

• decomposer

Which of the following animals would be considered a carnivore?

• zebra

• cow

• worm

• lion

People are usually considered to be ____________ because they eat both plants and animals.

• omnivores

• carnivores

• producers

• herbivores

1. Which of the following should be included in the chart to create a complete ecosystem?

An ecosystem: Caterpillars, ferns, butterflies,

spiders, fox, grass, snails, rabbits, birds

• a. Biotic factors, such as water, sunlight, and soil.

• a. Abiotic factors such as water, sunlight, and soil

• a. Producers such as flowers and trees

• a. Consumers such as herbivores and carnivores

Tags

NGSS.MS-LS2-3

According to the food web, what are two predators of the mouse?

• frog and grasshopper

• grass and grasshopper

• snake and eagle

• thrush and wolf