Food Webs and Energy Flow

Grade 5 Science Worksheet

Circle the answer.

1. Read this first

   A Pond Food Web

   Algae grow in the sunny water. Tadpoles and snails eat the algae. A bass eats the tadpoles, and a turtle eats the snails. When living things in the pond die, bacteria break them down.

2. 1.

   Which organism is the producer?

   • algae
   • bass
   • tadpole
   • turtle
3. 2.

   What does the bass eat?

   • snails
   • tadpoles
   • turtles
   • algae
4. 3.

   Which organism is a decomposer?

   • bass
   • tadpoles
   • bacteria
   • algae
5. 4.

   Which organism eats the snails?

   • tadpole
   • bass
   • turtle
   • algae
6. 5.

   Where does the energy in the pond food web come from first?

   • the air
   • the water
   • the Sun
   • the soil
7. 6.

   Which food chain shows how the energy moves?

   • algae → tadpole → bass
   • tadpole → algae → bass
   • bass → tadpole → algae
8. 7.

   What would most likely happen if all the tadpoles disappeared?

   • the algae would stop growing
   • the bass would have less to eat
   • the turtles would starve at once
   • the bacteria would take over the pond
9. 8.

   What do bacteria do in the pond?

   • eat only living plants
   • hunt the smaller animals
   • break down dead plants and animals
   • make food from sunlight