LS.7 Level 1

What is a biotic factor in an ecosystem?

• Water

• Sunlight

• Fish

• Rocks

Tags

VA.LS.7.a

Which of the following is an abiotic factor in a freshwater ecosystem?

• Algae

• Temperature

• Frogs

• Insects

Tags

VA.LS.7.a

What characteristic helps a cactus survive in a desert ecosystem?

• Thick leaves

• Deep roots

• Ability to store water

• Bright flowers

Tags

VA.LS.7.b

Which of the following is a physical characteristic that helps fish survive in water?

• Sharp claws

• Gills

• Feathers

• Long legs

Tags

VA.LS.7.b

Identify a biotic factor that can be found in a marine ecosystem.

• Salt

• Coral

• Sand

• Waves

Tags

VA.LS.7.a

Which of the following is an abiotic factor that affects land ecosystems?

• Trees

• Soil

• Birds

• Insects

Tags

VA.LS.7.a

What behavioral characteristic helps birds survive in cold climates?

• Migration

• Hibernation

• Camouflage

• Photosynthesis

Tags

VA.LS.7.b

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

• Rocks

• Deer

• Wind

• Sunlight

Tags

VA.LS.7.a

What is an abiotic factor that influences marine ecosystems?

• Seaweed

• Fish

• Salinity

• Crabs

Tags

VA.LS.7.a

Which physical characteristic helps polar bears survive in the Arctic?

• Long necks

• Thick fur

• Webbed feet

• Stripes

Tags

VA.LS.7.b