The epidermis sucks water in. ... The stele contains the xylem and phloem. ... These forces that move the wonderful water affect the water potential..Water potential is the potential energy of water in a particular system compared to the potential energy of pure water at the same atmosphere pressure and temperature. The movement of water in plants is determined by water potential differences.Water potential measurements predict which way they will move. ... They are nonvascular plants because of the fact that they lack the xylem and phloem tissues that other plants have. ...

• Word Count: 3790
• Approx Pages: 15
• Grade Level: High School

Why do trees need water? ... Additional water transpires through the pores in their leaves. ... (This is also known as the "phloem.") That suction must be strong enough to suck water out of the soil. The amount of force needed depends on the amount of water in the soil (a drier soil holds water more tightly), as well as the height to which the water must be lifted (a greater height requires more force, while a lesser height requires less force). ...

• Word Count: 2774
• Approx Pages: 11
• Grade Level: High School