The blue-dyed water uptake in a carnation experiment would be most appropriate for modeling which scientific concept?

• A. Nutrient absorption
• B. Respiration in plants
• C. Photosynthesis in leaves
• D. Translocation of minerals

Answer: (A)

The main idea being tested is how substances move from the outside environment into a plant’s tissues. In the blue-dyed water experiment with a carnation, water and whatever minerals are dissolved in it are drawn up through the stem into the plant’s vascular system. The dye makes visible this uptake of nutrients from the surrounding solution into the plant, illustrating nutrient absorption.

This is different from respiration or photosynthesis, which are about energy-related processes and gas exchange or carbon fixation, not about taking in nutrients from the external environment. It’s also about the initial entry of nutrients into the plant, rather than the subsequent movement of minerals once inside the plant, which is why nutrient absorption is the best fit for what this setup models.