Ecosystem Retake

What is likely to happen if humans over-hunt antelope and the antelope population decreases?

• The grass population will decrease.

• The lion population will increase.

• The lion population will decrease.

• The grass population will stay the same.

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NGSS.MS-LS2-1

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Which type of organism is responsible for recycling the remains of a dead plant or animal to the soil?

• Producer
• Consumer
• Decomposer

A living organism that puts materials from dead  plants and animals back to the soil is called a ____________?

• carnivore
• decomposer
• herbivore
• omnivore

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NGSS.MS-LS2-3

Which groups describes only decomposers?

• spiders, fungi, grass
• ladybug, deer, duck
• worm, trees, sunflower
• fungi, bacteria, and worms

Which organism would be affected first if the amount of sunlight were reduced in an ecosystem?

• producers
• consumers
• decomposers

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The arrows in a food chain or web represents what?

• They point to the organism that is being eaten.
• It shows how sunlight flows within an ecosystem.
• They show what direction the energy is flowing between organisms. 
• They represent how water is transferred within a habitat.

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NGSS.MS-LS2-3

What may happen if the snowshoe hare was removed from the food web pictured?

• The insects in the habitat would increase.
• The shrew population would decrease due to being only hawk food source.
• The willow tree population would decrease.
• Foxes would dies due to no food source. 

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Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?

• There would be a decrease in the small bird population.
• There would be a decrease in the grass/flowers population.
• There would be a decrease in the mice population.
• There would be an increase in the grass/flowers population.

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What is missing from this food chain?
Grass > Grasshopper > Bird > Snake

• Producer
• Primary Consumer
• Secondary Consumer
• Decomposer

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NGSS.MS-LS2-3

What does a food web represent?

• All connections of energy flow throughout all organisms in a ecosystem.
• The specific ways that mutualism is carried out.
• A single pathway or energy flow between organisms. 
• How carnivores get their food. 

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