SA 1 Ecological Foundations

Which shows an abiotic factor influencing a biotic factor?

• A cactus stores water during a drought.

• A wolf hunts a deer in a forest.

• A bird builds a nest in a tree.

• A rabbit eats grass in a meadow.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

In a tide pool, sea anemones host algae that create food through photosynthesis. Which is a biotic factor here?

• The salt concentration of the water

• The sea anemones

• The sunlight hitting the tide pool

• The water’s temperature

Which table correctly matches each type of species interaction?

• Competition = lions fighting for territory; Mutualism = bees pollinating flowers; Parasitism = tapeworms in dogs; Predation = owls eating mice

• Competition = tree roots using sunlight; Mutualism = wolves hunting together; Parasitism = cows eating grass; Predation = mushrooms on logs

• Competition = fish swimming in schools; Mutualism = bacteria infecting humans; Parasitism = lichen on rocks; Predation = two birds sharing food

• Competition = birds singing; Mutualism = cats chasing mice; Parasitism = humans feeding birds; Predation = algae making food

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NGSS.MS-LS2-2

Deer feed on forest plants, and wolves feed on deer. What are deer in this relationship?

• Carnivores

• Decomposers

• Herbivores

• Producers

What could keep the wolf population from dropping even if deer decline?

• Harsh winters

• More predators of deer

• A new food source

• Disease in deer

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NGSS.MS-LS2-2

NGSS.MS-LS2-4

Two frog species both eat the same type of insect in the same pond. What describes their interaction?

• Competition

• Mutualism

• Parasitism

• Predator-prey

Tags

NGSS.MS-LS2-2

During photosynthesis, plants use which gas to make sugars?

• Oxygen

• Carbon dioxide

• Nitrogen

• Helium

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

Where does photosynthesis primarily take place in a cell?

• Nucleus

• Ribosome

• Chloroplast

• Mitochondria

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NGSS.MS-LS1-6

Environmental science studies human interactions with the environment. Which would NOT be considered part of the environment?

• Forest animals and plants

• The minerals in the soil

• The area’s rainfall and temperature

• None — all of these are part of the environment

On St. Matthew Island, reindeer multiplied quickly because they had no predators and plenty of resources. After many years, their numbers collapsed. What caused the crash?

• New predators

• Overeating plants until food was gone

• Disease outbreak

• Migration to another island

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4