Essay On Phloem

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 cal ...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

RELATED

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

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

Literary Analysis - Hills like White Elephants - WR 303 - Literary Analysis

1555 words - 7 pages 1 Madison Evans Jake Sauvageau WR 303 Literary Analysis 8/30/18 Ernest Hemingway’s Hills like White Elephants The short story Hills like White Elephants by Ernest Hemingway is a story about a man and woman who are sitting at a bar at a small train station somewhere in Spain. They seem to be having a heated conversation about a mysterious “operation”. The author never explicitly says what the issue is between the man and woman, but it can be

An Analysis of Walter Freeman, Father of the Lobotomy - NKU HNR 151H - Essay

1433 words - 6 pages 1 Brandell Hannah Brandell Prof. Tamara O’Callaghan ENG151H-007 5 May 2017 Walter Freeman and the Invention of the Lobotomy In Steely Library’s digital archives, one of the postcards from the Gilliam family collection is entitled Western Kentucky Asylum for the Insane, Hopkinsville, KY. The postcard dates back to 1915 and portrays a beautiful building, complete with red bricks and white columns. Many of the insane asylums around this time were

Lost Treasure, A story about a psychopathic father - Amity college 11BB - Creative Story

1130 words - 5 pages Lost Treasure When I was a child, my late father and I would spend every moment of the summer season on the sparkling white sand of the beach near our home. We would dance, kicking up the shiny surface so that the droplets glimmered like diamonds in the sunlight. We would lie on our backs and stare at the sky, until the swirling clouds began to take on our imaginative shapes mingled together by our fantastical minds. We would grip imaginary

robotics revolution represent for human employment in New Zealand in the next 30 years - massey university - management

1357 words - 6 pages Rebecca Hastie 11256694 How much of a threat does the robotics revolution represent for human employment in New Zealand in the next 30 years? In order to understand the threats that robotics may pose to human employment in the future, it is important to examine the ways in which robots and computerization are already influencing different employment industries today, and how they have changed our labor practices in the past. If this information

A review of “Indigenous remain ‘asset rich, dirt poor’ 25 years after Mabo”. - ANU - literature review

1115 words - 5 pages Free A review of “Indigenous remain ‘asset rich, dirt poor’ 25 years after Mabo”. In the article “Indigenous remain ‘asset rich, dirt poor’ 25 years after Mabo”, Indigenous affairs editor, Fitzpatrick (2017) presents the socioeconomic situation of the Aboriginal people, using the views of the former prime minister’s advisor, Josephine Cashman. Miss Cashman pointed out that the promises made to the indigenous people, presented in the Mabo case, had not

Comparison of Tom and Jay from Great Gatsby - English - Essay

749 words - 3 pages Annie Shepherd-Barron, Luxmoore Comparison Between the Portrayal of Tom Buchanan and Jay Gatsby in Chapters 1 to 6 Fitzgerald purposefully portrays Jay Gatsby and Tom Buchanan in contrasting ways to emphasise the variety of money within the American market, during the era in which the novel is set. A major difference between the two men is ‘new money’ and ‘old money’, where Gatsby represents ‘new money’, but Daisy and Tom represent ‘old money

term project of marketing strategy - global business management 1 st semester - essay

405 words - 2 pages Boston Pizza Boston Pizza is a Canadian fast food restaurant, which began in Edmonton, Alberta, on August 12, 1964. The restaurant had begun operations on 17 different locations in western Canada by 1970. In 1968 a royal Canadian mounted police officer Jim treliving noticed the growing popularity of Boston pizza and he bought the rights to start a restaurant in British Colombia. He was the first franchisees of Boston pizza. At present, Boston

The advantages and disadvantages of social media - Bucks County Community College - essay

830 words - 4 pages Sioe Liang Ngeow ( Caden ) Alan Rubin COMP110.N12 15 June 2017 Wisely Use Of Social Media In the era of modernity, the application of technology is already inevitable, especially the use of social media. Social media such as Facebook, Twitter and YouTube have come into widespread use globally. As we all know, Mark Zuckerberg, as the chairman and chief executive officer of Facebook is ranked as one of the top ten wealthiest people in the world

Pet Peeves Public Speaking Speech - Public Speaking - Speech

506 words - 3 pages ​I’m​ ​not​ ​usually​ ​the​ ​kind​ ​of​ ​person​ ​to​ ​express​ ​when​ ​things​ ​annoy​ ​me--other​ ​than​ ​rolling​ ​my​ ​eyes,​ ​but​ ​there are​ ​actually​ ​quite​ ​a​ ​lot​ ​of​ ​things​ ​I​ ​don’t​ ​like.​ ​I​ ​can’t​ ​say​ ​I’m​ ​not​ ​guilty​ ​for​ ​some​ ​major​ ​pet​ ​peeves,​ ​like​ ​always​ ​being late,​ ​but​ ​here​ ​are​ ​my​ ​pet​ ​peeves​ ​that​ ​people​ ​should​ ​really​ ​work​ ​on. This​ ​one​ ​goes​ ​out​ ​to​ ​my​ ​mom…​ ​Yes

math Algebra Define Variable 1 Math - Algebra 1 - Algebra 1

868 words - 4 pages Evaluate each expression when y = 6. 1. 7 – y = 2. y – 3 = 3. 6 + y = 4. y + 2 = 5. y – 2 = 6. y – 1 = 7. 7 + y = 8. y + 8 = 9. 3 + y = 10. y + 4 = Evaluate each expression when y = 4. 11. y + 5 = 12. y – 7 = 13. 2 – y = 14. 7 – y = 15. 9 – y = 16. y + 6 = 17. 6 – y = 18. y – 5 = 19. y + 4 = 20. y + 9 = Evaluate each expression when y = 8. 21. y + 5 = 22. y – 8 = 23. 2 – y = 24. 6 – y = 25. y – 1 = 26. y – 9 = 27. 4 + y = 28. 1 + y = 29. 9 – y

home automation haow its work in the society - speech comunication - home automation

1618 words - 7 pages Free Introduccion A home automation system typically connects controlled devices to a central hub or "gateway". The user interface for control of the system uses either wall-mounted terminals, tablet or desktop computers, a mobile phone application, or a Web interface, that may also be accessible off-site through the Internet. Also it will control lighting, climate, entertainment systems, and appliances. It may also include home security such as