Limiting Factors

If the amount of food or resources available increases, the carrying capacity for an animal:

• Stays the same
• Increases
• Decreases
• Fluctuates

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

In a forest ecosystem, which of the following is the best example of a limiting factor for a rabbit population?

• Squirrel Population
• Sunlight
• Grass available

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NGSS.MS-LS2-4

The largest number of individuals in a species that an environment can support long term

• carrying capacity
• emigration
• immigration
• population density

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NGSS.MS-LS2-1

Which of the following would INCREASE the carrying capacity of an ecosystem?

• increase in predators
• disease
• increase in available food
• drought

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

Limiting factors are sometimes helpful because they can keep the population from getting to large.

• True
• False

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NGSS.MS-LS2-4

Estuaries often have marsh grasses that act as a safe nursery for young fish. Which is a limiting factor, provided by estuaries, does this describe?

• Food

• Water

• Shelter

• Predators

In a forest ecosystem, a food chain might look like this:

green plants --> rabbit --> coyote --> lion

If the green plants are destroyed in a forest fire, which short-term effect will this have on the organisms in this food chain?

• There would be fewer rabbits for the coyotes to eat.

• The mountain lions would have to begin to eat green plants.

• There would be an increase in the coyote population.

• There would be more green plants for the rabbits to eat.

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

Two tomato seeds are planted in soil in a five-gallon container labeled X. Eight tomato seeds are planted in soil in a different five-gallon container labeled Y. Both containers are placed in the sun and watered each day. Which most likely describes the tomato plants growing in X and Y after several months?

• The two tomato plants in X will be taller than the eight tomato plants in Y.

• The two tomato plants in X will be shorter than the eight tomato plants in Y.

• The two tomato plants in X will be the same size as the eight tomato plants in Y.

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NGSS.MS-LS1-5

NGSS.MS-LS2-1

After a forest fire, plants come back in abundance. Which limiting factor to plant growth is removed?

• Food

• Water

• Shelter

• Space

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NGSS.MS-LS1-5

NGSS.MS-LS2-1

How would a drought most likely affect the plants of a grassy plain?

• There would be shorter plants

• They would have thicker stems

• There would be a greater variety

• They would have brighter flowers

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NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4