Understanding Ecosystems and Food Chains

How does temperature affect the migration behavior of birds?

• Birds migrate to cooler areas when temperatures rise.

• Birds migrate to warmer areas when temperatures drop.

• Birds do not migrate based on temperature changes.

• Birds migrate to find more food, not because of temperature.

What happens to plants during dormancy?

• They grow faster.

• They stop growing temporarily.

• They change color permanently.

• They produce more flowers.

Which of the following is a primary source of energy in a food chain?

• Herbivores

• Carnivores

• The Sun

• Decomposers

What might happen if bees are removed from a field?

• The number of flowers will increase.

• The plants will produce more seeds.

• The plants may not be pollinated and could die.

• The field will become a forest.

How does a flood affect the environment?

• All organisms thrive.

• Some organisms thrive, while others perish or move.

• No organisms are affected.

• Only plants are affected.

What is the effect of a drought on animals?

• Animals have more water to drink.

• Animals may move to find water.

• Animals become more active.

• Animals grow larger.

Which of the following is an example of a food chain?

• Sun → Grass → Rabbit → Fox

• Water → Fish → Bird → Tree

• Soil → Worm → Bird → Cloud

• Rock → Lizard → Snake → Eagle

What is the role of decomposers in a food chain?

• They produce energy from the sun.

• They break down dead organisms.

• They are the top predators.

• They are primary consumers.

How does precipitation affect plant growth?

• More precipitation always leads to more growth.

• Too much or too little precipitation can harm plants.

• Precipitation has no effect on plants.

• Plants grow only in dry conditions.

What might happen to a pond ecosystem if frogs are removed?

• The number of insects might increase.

• The water level will rise.

• Fish will become the new top predator.

• The pond will dry up.