Long distance transport, Biology

Assignment Help:

Long Distance Transport

Once in the xylem vessels, the transport of the mineral elements from the root to the shoot is driven by the gradient of hydrostatic pressure (root pressure) and by the gradient of water potential. The gradient of water potential between roots and shoots is usually quite steep during the day when the stomata are open. It follows the pattern: atmosphere << leaf cells << xylem sap < root cells < external solution (soil). Transport in xylem vessels is mainly unidirectional. An increase in the transpiration rate enhances both the uptake and the translocation of mineral elements in the xylem.

 


Related Discussions:- Long distance transport

Illustrate the thin and think filaments in the muscle fiber, Illustrate the...

Illustrate the thin and think filaments in the muscle fiber A healthy skeletal muscle fiber is isolated and has no external forces on it.  It has normal intracellular levels of

What is represented by the cellular secretion, Q. What is represented by th...

Q. What is represented by the cellular secretion? Cell secretion is the removal to the exterior of substances produced by the cell for instance, hormones, mucus, and sweat, so

Sericulture, i want to know about sericulture for assignment degree level

i want to know about sericulture for assignment degree level

Malpighian tubules, Malpighian Tubules Other arthropods like insects ...

Malpighian Tubules Other arthropods like insects and myriapods and arachnids have Malpighian tubules, the outgrowths of alimentary canal like excretory organs. Malpighian tub

Global alteration of brain functioning - sleep, Q. Global alteration of bra...

Q. Global alteration of brain functioning - Sleep? Sleep involves a global alteration of brain functioning, and occupies one third of our lives, The transition from waking to

Types of amoeboid movements, Types of Amoeboid Movements As the amoeba...

Types of Amoeboid Movements As the amoeba's cell body throws out one or a few pseudopodial lobes, a temporary rear end or uroid is pulled along. The central, more fluid protop

Explain the bohr''s model, Explain the Bohr's model? Bohr's Model :  ...

Explain the Bohr's model? Bohr's Model :  Electrons move around the nucleus at tremendous speeds and occupy most of the space in an atom. The exact position or location of an

In how many form glycogen synthase exists, Glycogen  synthase exists  in t...

Glycogen  synthase exists  in two forms:   the phosphorylated form designated  as  'D' form is the  inactive one and  the dephoshorylated form designated as  'I'  form is the activ

Abdomen examination of new born, Abdomen check the contour of the...

Abdomen check the contour of the abdomen; normally it should be soft, symmetrical, slightly round and moves in synchronously with chest  in premature neonate abdomen w

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd