Biotic Factor

Which is an example of a seasonal change to a biotic factor?

• Temperatures get cooler in the fall.

• Hours of sunlight increase the summer.

• Birds fly south for the winter.

• Rainfall increases in the spring.

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NGSS.MS-LS1-4

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In many desert ecosystems, days are hot and nights are cold. Water is scarce, so animals seek water wherever possible. The spines of a cactus are actually leaves adapted to conserve water. The cactus plants have also adapted to live in thin, sandy soil. Which of the following is a biotic component of a desert ecosystem?

• the thin, sandy soil

• the wide temperature range

• the scarcity of water

• the spiny cactus leaves

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NGSS.MS-LS1-5

All living or once living things in an ecosystem are

• None

• biotic factors

• abiotic factors

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NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Is a dog considered abiotic or biotic?

• Abiotic

• Biotic

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NGSS.MS-LS1-1

Is a human considered abiotic or biotic?

• abiotic

• biotic

• neither

• both

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NGSS.MS-LS1-1

NGSS.MS-LS1-3

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

NGSS.MS-LS2-4

Is a Cat considered abiotic or biotic?

• Abiotic

• Biotic

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A zebra skeleton

• Biotic factor

• Abiotic factor

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which of the following is a biotic factor in a forest ecosystem?

• Sunlight filtering through the trees

• The variety of tree species

• The mineral content of the soil

• The flow of a nearby river

In a marine ecosystem, which of the following is considered a biotic factor?

• The salinity of the water

• The coral reefs

• The ocean currents

• The temperature of the water