Symbiosis: Living Together (Part 2)

What You'll Learn

Symbiosis is a close relationship between two different species. In mutualism, both benefit; in parasitism, one benefits while the other is harmed; in commensalism, one benefits and the other is unaffected.

Key Words

germination
pollination

Materials Needed

cotton balls
zip-lock bags
labels
seeds
soil

Safety First

Be careful with scissors — ask an adult for help if needed.
Do not look directly at the sun or bright lights.

Steps

Step 1 — Read

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

Step 2 — Do

Design a controlled experiment: grow plants under different light conditions (full sun, partial shade, no light). Water equally and measure growth daily for one week.

Step 3 — Observe

Use your senses (except taste) to describe what you notice.

Step 4 — Record

Write a summary of your findings in 3-5 sentences.

Check Your Understanding

Question 1

1 of 3

What is symbiosis?