Question

If a plant is growing with the roots in the water but the rest of the plant above water, does that plant have to absorb all of the nutrients in the ratio that they exist in the water or can it absorb what it needs and reject/return what it doesn't?

Answer 1

Plants have the capability to selectively absorb nutrients they need from the water and do not take up all nutrients in the ratios present in the water.

Step-by-step explanation:

Plants can absorb nutrients selectively and do not have to take up all nutrients in the ratio that they are present in water. Through the root system, plants absorb water and inorganic nutrients, such as nitrogen (N) and potassium (K), for growth and development.

While the roots are immersed in water, they utilize specialized structures and processes to absorb the necessary nutrients and water. However, plants also possess regulatory mechanisms that allow them to take up specific nutrients they require, rejecting or not absorbing excess amounts of other nutrients.

The plant's ability to regulate nutrient intake helps optimize their growth and ensure they obtain the right balance of macronutrients and micronutrients needed for their survival. Nutrients dissolved in the water are also taken up by the roots and transported to different parts of the plant for various functions.