Movement of water and minerals from soil solution to plant roots

K+ concentration of root hairs is how much times greater than that of soil solution

100 times

Why is the cells near the root tips of roots import

1)Cells near root tips are important

2)Because most of absorption of water and mineral ions occur

Speciality of the epidermal cells in root tips

1)In this region the epidermal cells are permeable to H2O

2)Many cells are differentiated to form root hairs

Which accounts much of water absorption and why

1)Root hairs accounts for much of absorption by roots

2)due to increase in surface area

Root hairs absorbs what

Soil solution

Soil solution consists what

Soil solution consists of

1)H2O molecules

2)dissolved mineral ions

(Not tightly bounded to soil particles)

Root hairs absorption takes place across what structure

Absorption takes place acroos plasma membrane

Water enters root hairs by what process

Osmosis

What is water osmosis

A passive movement across concentration gradient

Compare mineral ions concentration of root hair and soil solution

[Root hair]>[Soil solution]

So as mineral ions concentration in root hairs is high than solution by what transport method are they transported

Active transport

What is active transport

Transport occurs against concentration gradient

If during root hair absorption water doesn’t pass plasma membrane then what happens

1)Soil solution is absorbed into hydrophilic walls of epidermal cells

2)passes freely across extracellular spaces into root cortex