NGSS.MS-LS2-1

Which population would be most affected if there is a decrease in the population of aquatic insects?

• elk
• frog
• moose
• squirrel

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NGSS.MS-LS2-1

Which is an abiotic factor that would affect the growth of a population within an ecosystem?

• the availability of water
• the availability of producers
• the type of herbivores present
• the number of carnivores present

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NGSS.MS-LS2-1

Bromeliads are small plants that grow attached to the sides of large trees high above the ground in warm, damp and densely crowded tropical rainforests. Bromeliads do this because they are in competition with other plants for -

• soil.
• heat.
• light.
• water.

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NGSS.MS-LS2-1

What happens when an environment reaches its carrying capacity?

• Populations will decrease
• Resources such as food, water, and space will be unlimited
• Populations will increase
• Nothing, everything will stay the same.

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NGSS.MS-LS2-1

The maximum number of organisms that an ecosystem

can support without deteriorating

• carrying capacity

• exponential growth

• mitosis

• photosynthesis

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NGSS.MS-LS2-1

What are the biotic factors in this image?

• sunlight, elephants, and grasses
• sunlight, water,  and air
• elephants, plants, trees 

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NGSS.MS-LS2-1

This diagram shows the variety of organisms that live in different tide zones. Mussels are common organisms that compete for space in intertidal (middle) tide zones. If all of the mussels were removed from zone A, which organisms would likely compete for the space in Zone A?

• Periwinkle and Limpets

• Sea lettuce and Chiton

• Sea urchins and Hermit crabs

• Rock louse and Periwinkle

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NGSS.MS-LS2-1

Largest number of individuals of a particular species that an ecosystem can support over time.

• Carrying Capacity

• Limiting Factor

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NGSS.MS-LS2-1

Competition becomes more important as the number of individuals ______ or the availability of resources _________.

• increases, decreases

• increases, increases

• decreases, increases

• decreases, decreases

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NGSS.MS-LS2-1

A certain species of plant serves as the only food for the young larvae of a particular species of butterfly. In a large field, a disease kills all the members of this plant species. As a result of the plant disease, the butterfly population will most likely

• quickly adapt to eat other plants

• disappear from the area

• evolve to form a new species

• enter the adult stage more quickly

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NGSS.MS-LS2-1