Phloem Essay

349 words - 2 pages

Tube vessels inside plant stems that transports sugars and minerals. Do not have strong walls.Translocation*Movement can be in any direction but always moves from where sugar is in abundance (sugar source) to where sugar is needed (sugar sink)Sugar is made in photosynthesizing cells of the plant and can be polymerized and stored as starch in any cells of the plant. The sugar produced in photosynthesis is called ...view middle of the document...

Besides sugars, amino acids, other nitrogenous compounds and other nutrients are present in the sap (sugar solution) in the phloem vessels.The phloem transports substances using the pressure flow mechanism. This process requires cellular energy *(ATP). Sucrose is loaded into the phloem vessels against a concentration gradient by active transport using ATP. This increases the solute concentration in the phloem and as a result water moves into the phloem from the cells by osmosis. At the sugar sinks sucrose is removed from the phloem into the plant cells that require it. Water follows the sucrose from the phloem into the cells by osmosis.At one point of the phloem (sugar source) there is a large amount of solute concentration and a high water content. This exerts a high water (turgor) pressure or hydrostatic pressure. There is a low amount of solute, lower water content and a lower turgor pressure. Water flows along the phloem from the area of high hydrostatic pressure to the area of low hydrostatic pressure that is from source to sink.*The movement of sugars in plants*Adenosine triphosphate

Other Essays On Phloem

Polymer Mechanichemistry Essay

265 words - 2 pages Summary of Polymer MechanochemistrySometimes, curiosity gets the best of you, it did with Aj Boydston, an assistant professor at the University of Washington. Mr. Boydston and his students at the university conducted experiments, used models and imagined what would happen to the behavior of polymers when polymers undergo mechanical stress. This is a field of chemistry called polymer mechanochemistry. Creating models of star polymers on a 2-D

the changing Essay

288 words - 2 pages One hand Reaches out And pulls a lost soul from harm While a thousand more go unspoken for They say what good have you done By saving just this one It's like whispering a prayer In the fury of a storm And I hear them saying you'll never change things And no matter what you do it's still the same thing But it's not the world that I am changing I do this so this world will know That it will not change me This heart Still believes The love and mercy

The Importance Of The Act Of Reading” By Paulo Freire Essay

1423 words - 6 pages 4BredahlHarlie Cheyenne BredahlProfessor Peter EppsComposition II08 September 2014I"The Importance of the Act of Reading" by Paulo Freire, describes the importance of the act of reading beyond numerous experiences in his life as a child, a teenager, and an adult. Freire begins his article by taking readers back to where he was born, in his home city Recife, Brazil. He uses very itemized imagery to describe the trees, the house and the atmosphere

American Dream

765 words - 4 pages The American Dream is the quintessence of a comfortable victorious life, which often includes material prosperity, a house, an improved life for one's kids, and sometimes; it means achieving any goals one may have regardless of what class he or she comes from (O'Connor, Sabato and, Yanus 19). In recent years, it has become more difficult to achieve the American Dream; this is mainly due various issues involving the relationship between the

adadwq sdadasd

504 words - 3 pages Dengan Smarty Ring, Anda bisa membaca notifikasi di handphone Anda melalui jariKetika semua orang membicarakan kecanggihan Google Glass atau smartwatch, tak banyak orang yang berpikir bahwa sesuatu yang ukurannya lebih kecil dari itu juga bisa berguna. Ide itulah yang diusung Smarty Ring, yang memperlihatkan semua notifikasi handphone Anda sehingga Anda tidak harus mengangkat handphone Anda untuk mengetahui apa yang terjadi. Smarty Ring, yang

commerce

519 words - 3 pages Related text: American History X Comment by George Moulos: You can't analyze a film the same as a book.If you re doing film you have to do film techniques, not literary techniques.-Derek Vinyard after going to prison and learning that his prejudice stemmed from ignorance he teaches his brothers Danny vineyard that his fascism and racism was wrong and ignorant.Movie Summary:Derek Vineyard begins in the movie as a troubled young man who due to his

Miniscribe Corporation

1685 words - 7 pages EXECUTIVE SUMMARYTerry Johnson, a native of Longmont, Colorado established the MiniScribe Corporation, a disk drive manufacturing company that would grow to be one of the largest producers and distributors of disk drives for personal computers in America.This report focuses on relevant facts and figures in the evaluation of MiniScribe's liquidity, profitability, and overall stability aiming to determine whether or not maintaining its stocks on

dream world

384 words - 2 pages Dream worldThe warmth of the blanket upon me keeps my body safe and relaxed. My arms and legs stop trying to interact with this physical world. Peacefully, they give up and rest. My head falls further into the softness of my pillow. My eyes are closed slightly and my mind. I use my intuition to see through the world. I dream…Suddenly, the deafening noise of the alarm clock woke me up with a startling jolt. It seemed as though I had fallen

the adverb clause.ppt

754 words - 4 pages USE OF ARTICLES (a, an, the)What did these words originally mean?A/AN is an old word meaning `one'(in many European languages the ordinary word for `one' is used to translate English `a' or `an' and you can also sometimes use Cantonese `yat go' in the same way)THE is an old word meaning `this' or `that'These words no longer have their full original meaning but if you remember that meaning it can sometimes help you to decide which word you need to

Highfyr

537 words - 3 pages Breanna PonceMia Sandoval Dominick KlingbyllAugust 26, 2013Block 2The Effect of Pineapple on Jell-OBACKGROUND:Protein was a big part of this gelatin lab. Protein is a multipurpose macro molecule. Gelatin is a protein made out of Jell-O, we used Jell-O in our lab. The students had to put pineapple in the gelatin to see if it will form. The enzymes in the pineapple prevented that from happening. Enzymes are a biological catalyst. Bromelain is the

merits and demerits of mordern gadgets

418 words - 2 pages "MORDERNELECTRONICGADGETS"IntroductionModern gadgets have made us complete slaves to machines. There is no work which cannot be done without the assistance of machines and there is not a single area of human activity where machines don't have to be used. No one can deny the fact that gadgets have not only simplified our lives but also made them more comfortable and luxurious. If electricity fails, life for each one of us comes to a standstill as

Similar Papers

Discuss The Xylem And Phloem. (Structure, Changes In The Xylem Of Woody Plants, Transport)

996 words - 4 pages supplying materials to the living tissues in the vascular cambium and phloem. Flowering plants have a quite efficient xylem. The last act in life of some conducting cells is to digest parts of their end walls, forming holes, not just pits (where little or no extra material has been added to the primary cell wall). These holes allow water to flow rapidly from one cell to the next. Hollow xylem tubes are called vessels while the cells of the vessels

Discuss The Hormones In Plants And Their Actions. (Auxin, Gibberellin, Cytokinin, Abscisic Acid, Ethylene)

463 words - 2 pages control weeds. Agent Orange is not used anymore due to the fact it harmed animals as well as plants.Gibberellins stimulate elongation of stem cells and cell division. It can also help to fix problems with faulty, odd plants. This hormone helps the development leaves, sexual flowering plants and helps differentiate phloem tissue. Also it can stimulate production of auxin, as well as make plants more responsive to auxin treatment.Another hormone is

Structure And Function Of Carbohydrates Essay

512 words - 3 pages turgidity and is therefore stored freely in parts of the plant. Starch is very compact and so large amounts of it can be stored for future use, making its structure complimentary for its function. Amylopectin has a lot of branching, due to some 1,6 - glycosidic bonds that occur, and therefore has many end points for enzymes to hydrolyse. This means that the starch can be quickly broken down and transported through the phloem of the plant

Effects Of The Spotted Lanternfly On The Tree Of Heaven Drexel/English Essay

1978 words - 8 pages nest on the tree of heaven, also nesting on non-arboreal substrates elevates their level of spread to others. The damage caused by adults and nymphs on phloem tissue of young stems and bark is accomplished with their piercing mouthparts which excrete large amounts of liquid onto the bark surface. Likewise, wounds are often formed in the trunk of host trees, which results in wilting and death of branches. Some additional signs of infestation on a