Placing a white carnation in dark blue water until it turns blue models which concept?

• A. Osmosis.
• B. Light Absorption.
• C. Water absorption by capillary action.
• D. Nutrient Absorption.

Answer: (D)

The idea shown is how water and dissolved substances move upward through a plant via capillary action in the xylem. When the white carnation sits in blue water, the blue dye travels with the water up the stem and into the petals as the plant keeps drawing water through its vessels. The petals turn blue because the dye diffuses into them along the water pathway, illustrating transport through the plant’s vascular system driven by capillary action and transpiration.

Osmosis isn’t the main mechanism here—that’s water movement across a membrane, which is different from the bulk movement through vascular tubes. Light absorption isn’t involved in moving the dye into the petals, and nutrient absorption isn’t the focus—although nutrients can ride along with water, the experiment primarily shows water transport within the plant.