Graphing Practice Worksheet - Free Printable

It looks like you've uploaded an image of a Life Science worksheet titled *"Graphing in Life Science: Making and Reading Graphs"*, designed for ESL/ELL students, with a focus on interpreting and creating graphs based on scientific data. The worksheet includes multiple sections, but the most visible one is about the effect of a growth hormone on plant height.

Let’s solve the problem step by step based on the visible information in the image.

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🔬 Problem: Effect of Growth Hormone on Plant Height

#### 📊 Given Data Table:

| Hormone Solution (mL) | Plant Height at 2 Weeks (cm) |
|------------------------|-------------------------------|
| 0 | 11.5 |
| 5 | 15.5 |
| 10 | 20.0 |
| 15 | 23.5 |
| 20 | 31.0 |

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✔ Step 1: Identify the Variables

- Independent Variable: The variable that is changed or controlled by the experimenter.
- In this case: Hormone Solution (mL) → This is plotted on the x-axis.

- Dependent Variable: The outcome being measured.
- In this case: Plant Height (cm) → This is plotted on the y-axis.

> ✔️ So:
> - Independent variable: Hormone Solution (mL)
> - Dependent variable: Plant Height (cm)

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✔ Step 2: Plot the Graph

You are to plot the data points from the table onto a graph labeled:
> Effect of Growth Hormone on Plant Height

The axes are already labeled:
- X-axis: Hormone Solution (mL)
- Y-axis: Plant Height (cm)

Plot each point:
- (0, 11.5)
- (5, 15.5)
- (10, 20.0)
- (15, 23.5)
- (20, 31.0)

Then connect the points with a smooth line (since it's likely a continuous relationship).

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✔ Step 3: Answer the Questions

#### Question 1: What is the independent variable?
👉 Answer: Hormone Solution (mL)

#### Question 2: What is the likely plant height at 8 mL of hormone solution?

We don’t have data for 8 mL, so we need to interpolate between 5 mL and 10 mL.

- At 5 mL → 15.5 cm
- At 10 mL → 20.0 cm

Difference:
- 5 mL increase → 4.5 cm increase
- So, per mL: 4.5 ÷ 5 = 0.9 cm/mL

From 5 mL to 8 mL is +3 mL, so:
- 3 × 0.9 = 2.7 cm increase
- 15.5 + 2.7 = 18.2 cm

👉 Answer: 18.2 cm (approximately)

> You can also estimate visually from the graph if drawn.

#### Question 3: What is the plant height at 20 mL?

This value is directly in the table.

👉 Answer: 31.0 cm

#### Question 4: Make a claim (based) on this graph.

A claim is a conclusion supported by evidence from the graph.

👉 Example Answer:
> "As the amount of growth hormone increases, plant height increases. This suggests that the hormone stimulates plant growth."

Or more specifically:
> "There is a positive correlation between the concentration of growth hormone and plant height, indicating that higher doses of the hormone lead to taller plants."

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🎯 Summary of Answers:

1. Independent variable: Hormone Solution (mL)
2. Plant height at 8 mL: ~18.2 cm
3. Plant height at 20 mL: 31.0 cm
4. Claim: *Increasing the amount of growth hormone leads to greater plant height, showing a positive relationship between hormone dose and plant growth.*

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💡 Tips for Students (especially ESL/ELL):

- Label axes clearly: X = Hormone (mL), Y = Height (cm)
- Use consistent scales.
- Connect points with a smooth curve or line (shows trend).
- Use the graph to predict values not in the table (interpolation/extrapolation).
- Always state your reasoning when making claims.

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✔ KEYS Included! — As noted on the image, answer keys are provided by The Biology Bar, so teachers can check student work.

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Would you like me to generate a printable version of the graph or help create a visual representation of the plotted data?