Ecosystems and Environment Review

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

• Plants

• Water

• Animals

• Bacteria

Tags

TEKS.SCI.5.12A

What is the role of producers in a food web?

• They decompose organic matter.

• They produce energy from sunlight.

• They consume other organisms.

• They recycle nutrients.

Tags

TEKS.SCI.5.12B

Which of the following describes a healthy ecosystem?

• An ecosystem with only one species.

• An ecosystem with a balance of biotic and abiotic factors.

• An ecosystem with no predators.

• An ecosystem with only abiotic factors.

Tags

TEKS.SCI.5.12C

Which structure helps fish to survive in water?

• Wings

• Gills

• Legs

• Feathers

Tags

TEKS.SCI.5.13A

What is an example of an instinctual behavioral trait?

• A dog learning to fetch a ball.

• Birds migrating south for the winter.

• A cat being trained to use a litter box.

• A child learning to ride a bicycle.

Tags

TEKS.SCI.5.13B

How do plants and animals interact in a healthy ecosystem?

• Plants eat animals for energy.

• Animals provide carbon dioxide for plants.

• Plants provide oxygen and food for animals.

• Animals decompose plants.

Tags

TEKS.SCI.5.12A

Predict what might happen if a new predator is introduced into an ecosystem.

• The prey population will increase.

• The prey population will decrease.

• The ecosystem will remain unchanged.

• The predator will become prey.

Tags

TEKS.SCI.5.12B

How can human activities be beneficial to an ecosystem?

• By introducing invasive species.

• By conserving natural habitats.

• By polluting water sources.

• By overfishing.

Tags

TEKS.SCI.5.12C

Analyze how the beak shape of a bird can affect its ability to survive in its environment.

• Birds with long beaks can only eat seeds.

• Birds with short beaks can only eat insects.

• Beak shape determines the type of food a bird can eat.

• Beak shape has no effect on survival.

Tags

TEKS.SCI.5.13A

Explain how learned behaviors can increase an animal's chance of survival.

• Learned behaviors are always harmful.

• Learned behaviors help animals adapt to new environments.

• Learned behaviors are instinctual and cannot be changed.

• Learned behaviors decrease survival rates.

Tags

TEKS.SCI.5.13B