Lesson: Absorption of Water and Osmosis Science
In this lesson, we will learn how to identify the effects of osmosis and selective permeability on the absorption of water and minerals and explore the parts of the root hair that make it suitable for this process.
Water moves from the soil into a plant’s root hairs by osmosis.
Fill in the blanks to describe osmosis: Water molecules move from an area of concentration of water in the soil to an area of concentration of water in the root hairs.
Root hairs are adapted for their function by only allowing in certain types of mineral salts according to the needs of the plant. What do we call this adaptation?
Root hairs contain vacuoles that have higher concentrations of mineral salts than the soil around them.
Fill in the blank: A vacuole that has a high concentration of salt solution has a concentration of water.