27

Lesson 27 of 84 ยท Ecosystems

Experiment

Biomes of the World

What You'll Learn

Animals can be classified as herbivores (plant eaters), carnivores (meat eaters), or omnivores (eating both plants and animals). Their teeth and digestive systems are adapted to their diet.

Key Words

  • species
  • organism

Materials Needed

  • tape
  • small pots
  • cotton balls

Safety First

  • Use materials only as directed in the experiment.
  • Keep small objects away from young children.
  • Work in a well-ventilated area when using vinegar or other strong-smelling substances.

Steps

Step 1 โ€” Read

Look at the vocabulary words and write a definition for each in your own words.

Step 2 โ€” Do

Dissect a flower (lily or tulip works well). Identify and label the sepals, petals, stamen, pistil, and ovary. Tape each part to paper.

Step 3 โ€” Observe

Compare the before and after states.

Step 4 โ€” Record

Write your conclusion: did the results match your hypothesis? What would you change next time?

Check Your Understanding

Question 1

1 of 3

What organism produces food at the base of most food chains?

Biomes of the World โ€” Ecosystems | 4th Grade Science | LittleActivity | LittleActivity