Question

Biology HW. 1.What is diffusion? 2.What is osmosis? 3.What is active transport? 4.What is acent of sap? 5.What is transpiration? 6.What is root pressure?​

Answer 1

• (1)What is diffusion?
• Answer ☆- Diffusion is the movement of molecules from a region of higher concentration to a region of lower concentration down the concentration gradient.”
• (2)What is Osmosis?
• Answer ☆- the gradual passing of a liquid through a thin layer of material a membrane.
• (3)What is active transport?
• Answer ☆-the movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy.
• (4)What is Acent of Sap?
• Answer ☆-Upward rise of water and dissolved minerals, absorbed by roots, to the top of the plant against gravitational force is called ascent of sap. Class 11 13. The conducting cells in xylem are typically non-living and include, in various groups of plants, vessels members and tracheids.
• (5)What is Transpiration?
• Answer ☆- the process of water passing out from the surface of a plant or leaf.
• (6)What is root pressure?
• Answer ☆-Root pressure is the transverse osmotic pressure within the cells of a root system that causes sap to rise through a plant stem to the leaves. Root pressure occurs in the xylem of some vascular plants when the soil moisture level is high either at night or when transpiration is low during the day.

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