Educational worksheet for students to predict and observe the effect of colored water on a carnation flower.

This image is a science worksheet designed for students to explore the function of plant stems, specifically through an experiment involving a carnation and colored water. The worksheet has two sections: "Prediction" and "After Experiment", both showing a black-and-white drawing of a carnation flower.

Objective:

The task is to predict what will happen when a carnation is placed in colored water and then record the results after conducting the experiment.

---

Step-by-Step Explanation:

#### 1. Understanding the Role of Plant Stems
Plant stems have several functions, but one key role is transportation:
- They carry water and nutrients from the roots up to the leaves and flowers.
- This process is called transpiration, where water moves through the stem via tiny tubes called xylem.

When a flower like a carnation is placed in colored water, the water is absorbed by the stem and travels upward into the petals.

---

#### 2. What Happens in the Experiment?
- When the carnation is placed in colored water (e.g., red or blue), the stem absorbs the colored water.
- The color travels up through the xylem vessels.
- Over time, the petals begin to change color, especially along the veins or edges.

This demonstrates that the stem transports water from the base to the flower.

---

How to Complete the Worksheet:

#### 🔹 Prediction Section (Left Side)
- Students should draw or describe what they think will happen.
- Example prediction:
> "I think the petals will turn the same color as the water because the stem carries water up to the flower."

#### 🔹 After Experiment Section (Right Side)
- After placing the carnation in colored water for 24–48 hours, students observe the changes.
- Example observation:
> "The petals turned pink/red! The color started at the edges and spread inward."

---

Final Answer:

✔ The job of the plant stem is to transport water and nutrients from the roots to the rest of the plant.
In this experiment, the stem carries colored water up to the flower, causing the petals to change color — proving the stem’s transportation role.

---

Teaching Tip:

This activity is great for teaching scientific inquiry — making predictions, observing results, and drawing conclusions based on evidence.

Let me know if you'd like a printable version or coloring suggestions! 🌸