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Unicellular vs Multicellular Life

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Unicellular vs Multicellular Life

🔬 Part 1: Multiple Choice

1. What does "unicellular" mean?

Made of many cells

Made of one cell

Made of no cells

Made of dead cells

2. Which of these is an example of a unicellular organism?

Dog

Tree

Bacteria

Human

3. What tool do we need to see most unicellular organisms?

Telescope

Microscope

Magnifying glass

Our eyes only

4. Which of these are examples of multicellular organisms? (Select all that apply)

Elephant

Rose bush

Amoeba

Butterfly

📝 Part 2: Classification Activity

5. Sort these organisms into the correct groups. Write U for Unicellular or M for Multicellular next to each organism:

Bacteria ____

Kangaroo ____

Yeast ____

Eucalyptus tree ____

Paramecium ____

Goldfish ____

6. Complete the sentences using the words from the box:

Word Bank: cells, reproduce, grow, microscopic, organs

Unicellular organisms are made of only one ____________.

Many unicellular organisms are ____________ and cannot be seen without a microscope.

Multicellular organisms have many ____________ that work together.

Both unicellular and multicellular organisms can ____________ and make new organisms.

Complex multicellular organisms have tissues and ____________.

💭 Part 3: Short Answer Questions

7. Explain one advantage that multicellular organisms have over unicellular organisms.
8. Name two things that both unicellular and multicellular organisms need to survive.
9. Draw and label a simple diagram showing the difference between a unicellular organism and a multicellular organism.

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