Mycorrhizae free essay sample

Mycorrhiza is a specialized fungus in the soil which forms close associations with the roots of a vascular plants * In other temperate and boreal successional systems arbuscular mycorrhizal fungi are the primary mycorrhizal associate in early succession, whereas in older soils the main associates are ectomycorrhizal fungi (Piotrowski, 2008). Arbuscualar Mycorrhizae: Arbuscular mycorrhiza (AM) is the predominant and ancestral type of mycorrhiza in land plants. It’s root cells have arbuscules (tree like structure, highly branched hyphae inside plant cells) and vesicles in most species Its occurrence in a vast majority of land plants and early-diverging lineages of liverworts suggests that the origin of AM probably coincided with the origin of land plants. Classes include Archaeosporales, Diversisporales, Glomerales, Paraglomerales, part of the phylum Globermycota, and part of the kingdom fungi (species grow Arbuscular Mycorrhizae) * Fossil evidence and DNA sequence analysis by mycologists show arbuscular mycorrhizae first appeared approximately 400-460 million years ago. We will write a custom essay sample on Mycorrhizae or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Arbuscular mycorrhizas are found in 90% of all plant families, and occur in many crop species. How it Works: * Plant nutrients which are concentrated with nutrients are taken by hyphae and then released into the root cells of vascular plants. Nutrients can also be stored in the root of the fungus and used in the future when the nutrients are needed, such as low temperatures or season fluctuations. * Arbuscular mycorrhizas are mycorrhizas whose hyphae enter into the plant cells, producing balloon-like vesicles or dichotomously-branching arbuscules. Arbuscular mycorrhizae are known to be heterkaryon, goining through both asexual and sexual reproduction. * The hyphae of arbuscular mycorrhizal fungi produce the glycoprotein glomalin, which may be one of the major stores of carbon in the soil. Arbuscular mycorrhizal fungi have (possibly) been asexual for many millions of years and, unusually, individuals can contain many genetically different nuclei (a phenomenon called heterokaryosis). * The fungal hyphae do not in fact penetrate the protoplast (i. . the interior of the cell), but invaginate the cell membrane. The structure of the arbuscules greatly increases the contact surface area between the hypha and the cell cytoplasm to facilitate the transfer of nutrients between them. Ectomycorrhizae * Ectomycorrhizas, or EcM, are typically formed between the roots of around 10% of plant families, mostly woody plants including, eucalyptus, oak, pine, and rose * Families and fungi belonging to the Basidiomycota, Ascomycota, and Zygomycota. Ectomycorrhizas consist of a hyphal sheath, or mantle, covering the root tip and a hartig net of hyphae surrounding the plant cells within the root cortex. In some cases the hyphae may also penetrate the plant cells, in which case the mycorrhiza is called an ectendomycorrhiza. Outside the root, the fungal mycelium forms an extensive network within the soil and leaf litter. Nutrients can be shown to move between different plants through the fungal network. Carbon has been shown to move from paper birch trees into Douglas-fir trees thereby promoting succession in ecosystems. Benefits of Mycorrhizae * AMF affect phosphorus cycling, aid seedling establishment of many plant groups, help maintain plant diversity, and strongly contribute to soil stabilization and carbon storage through soil aggregate formation * Experiments have shown mycorrhizas can increase the uptake of plant nutrients such as nitrogen and phosphorous when they are at low concentrations or in insoluble form in the soil * Improve crops without being indispensible * Make nutrient uptake from poor soil more resourceful Mycorrhizas can increase the absorption of plant nutrients when they are at low temperatures or insoluble in the soil * The plant supplies the fungus with carbon compounds, including hexose sugars which are sugar alcohols which increases the plant cell permeability. * Carbon can be transferred between plants because mycorrhizae grow and attach to many different roots of plants of different species

Remembered Event Essay Topics Can Help You Develop Your Personality

Remembered Event Essay Topics Can Help You Develop Your PersonalityHave you ever considered how useful it would be to write an essay on a specific remembered event in your life? How would this benefit you in today's tough economy? Well, the idea of using a research paper and organizing it as an essay could really help you earn a higher grade and even develop your personality.Remembering a major event that you experienced is difficult. Some of us can remember events but cannot recall a lot of other things about them. For example, I can remember my first car, but I can't really say if I can remember the name of the car, its color, and if the person who bought me the car drove a nice car.I could remember all of these things, but the article still didn't turn out right. This is because writing an essay requires you to be creative and organize everything to make it very easy for you to recall. Remembering an event doesn't have to be quite so difficult.One of the best essay topics to use f or a research paper would be one that you created. That way, you can make sure you're able to remember every single detail of it. After all, you're not just going to read an essay that has been written by you. You're going to do it in front of a professor, one of your friends, or anyone else who is supposed to teach you something.If you have a specific remembered event that you want to bring up, you should make sure that it's one that can fit into the essay topic of the time. If it isn't, the essay will be extremely bland and boring to read.You can use any memory aids you want to help you remember. You could use flash cards, pictures, video, audio clips, or anything else that can help you remember the remembered event. Whatever you decide to use, make sure it fits in with the essay topic of the time.Remembering a specific remembered event is important because it helps you develop your personality. It will also help you meet new people and get to know new people from around the world .

His Brain Her Brain an Article Review free essay sample

To say that men and women are different wouldn’t be declaring anything anyone doesn’t already know, but scientists want to know why; through tests and research, studies have shown that our brains might be structurally, chemically, and functionally different. This raises the likelihood that sex-specific treatments might need to be developed when dealing with a wide variety of mental disorders.Until recently, scientists believed that the differences between male and female brains were limited only to their ‘†¦mating behavior†¦Ã¢â‚¬â„¢; however, a sudden increase in research accenting the influence of sex on an assortment of cognitions and behavior (such as, ‘†¦memory, emotion, vision, hearing and the response to stress hormones) has since come to light. These studies have been accelerated by advances in technology and the availability of ‘sophisticated imaging techniques’ such as the PET and fMRI.These machines expose dissimilarities in an assortment of areas in the brain. One such study, conducted by Jill M. We will write a custom essay sample on His Brain Her Brain an Article Review or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Goldstein of Harvard Medical School, involved the use of the MRI to measure the sizes of cortical and subcortical areas. Results indicated a bulkier frontal cortex, as well as parts of the limbic system, in women; these areas are relative to cognitive functioning and emotional response. One the other hand, men were discovered to have a larger parietal cortex and amygdala; areas that control space perception and adrenaline flow.Studies have also been done on the differences in stress-response in relation to the amygdala and hippocampi of men and women. Rat experiments, involving separation anxiety of babies, show that stressful situations caused an increase in serotonin production in males and a decrease in females; thought it is hard to juxtapose this information over to children, it could suggest that ‘†¦separation anxiety might differentially affect the emotional well-being of male and female children†¦Ã¢â‚¬â„¢. Additionally, male and female brains have been found to process, and deal with, information and tressors differently, and that ‘†¦sex-related (brain) hemispheric disparities in how the brain processes emotional images begin within 300 milliseconds†¦Ã¢â‚¬â„¢, or before a person consciously knows what they’ve processed . This could affect how the approach to treatment in disorders such as PTSD. Information shows that serotonin production in men is, on average, 52% higher than in women, which might explain why women are more vulnerable to depression; a disorder commonly treated with drugs that increase serotonin levels. The overall idea behind this article is cool; men and women are different, our make-up is different; it makes sense that our brains would function dissimilar as well. The reading was pretty dry, but I could see how scientists get excited about some of these studies. It’s fascinating to think that someday we might understand the impact of sex (gender) on brain functioning well enough to apply it to treatments that are sex-specific.

Universal Themes Essays

Universal Themes Essays Universal Themes Paper Universal Themes Paper Make a Copy Common themes All of life is connected Each life, no matter how small, matters Life is too brief Youth (innocence) and beauty do not last We dont appreciate what we have until it is gone Pride can blind us to the truth Small acts of kindness and/or generosity can have a tremendous effect Courage can reward those who push themselves Sometimes we learn too late what we need to know Social status, beauty, wealth, etc. Do not matter We learn through trial, hardship, or pain those lessons most valuable The individual is sometimes in conflict with society Individuals are often alienated and alone Agglomerations is a fierce inner force, but is often thwarted or delayed by o outside forces Fantasy is sometimes more real than everyday reality Mortality is inevitable Human beings are sometimes too weak or too blind to do what is right We often want what others have or we often want what we cannot have Fear, jealousy, and greed are destructive emotions People of all cultures and of all times are more alike than they are different Nature does not care about people Each of us is alone, often feeling small or frightened in the world Evil exists in the heart of men (and women) Power can be a compelling force Activity One: Now write a universal theme statement for these thematic sues actions What is truth? What is beauty? What is real? What is justice? What is honor? What is love? What does it mean to live a good life? What does it mean to be a hero? What does it mean to have courage? What does it mean to be a friend? Activity Two: From your blobs identify which of the themes above or below match your topic. Then, determine at least one rhetorical strategy used, and then, defend, shall Eng or qualify it. In other words, why is it important? Summarize your blob or article. Match to a theme State the rhetorical strategy Defend, challenge or qualify it More themes Value of technology in education Slavery Function of humor and humorists in society Daylight Savings Time Midwestern values Effects of a consumer culture Individual and conformity free speech effect of television on society environmental issues effect of adversity on ones character value of penny coins scientific research methods corporate advertising/sponsorship in schools national school curriculum intellectualisms effect of dissent in America Effect of advertising on society emigration ethics of rewarding charitable acts in school what museum artifacts represent value of muckrakers/whistle blowers rascals how fads reflect American values effect of money in society value/effect of personal opinion/commentary in society compulsory voting effect of reading on independent thought consumerism and advertising poverty the Mississippi River value of trial and error thinking cultural differences comm on sense and personal values protecting the environment morality cultural norms effect of entertainment on society admiration of birds in flight plagiarism in school effects of Civil War from Lincoln point of view childhood memories abuse of power appreciation for natural world/beauty man versus machine/technology selfsameness limitations of viewing the world through photographic images Activity three: Put these themes in a two column table and write the theme in the first column and an idea of your own original thought about the topic in the second. Value of Technology in Education Technology in education helps students keep up with the latest technology and prepare them for the work place. It also allows students to explore a topic deeply.

Discussion Topic Essay Example | Topics and Well Written Essays - 250 words

Discussion Topic - Essay Example Another fallacy is hasty generalization. It refers to when a conclusion is reached with insufficient information and what follows is an immediate generalization (Davis, 2007). A person might visit a restaurant once and fail to like food that is being served. That does not necessarily mean the restaurant is inferior. Its mistake is that it leads to stereotyping. One takes an example and keeps using it to draw some pattern of undesirable results that might follow (Davis, 2007). An example is when one argues that a certain Television station should not ban some programme. If they ban one programme, they might as well ban all the others. Its mistake is that some roots for equal treatment of all elements whether favourable or lousy. Media is one of the biggest platforms that normally use fallacy in their routine. Two of the most commonly misused fallacy includes the appeal to pity and popularity. Appeal to popularity follows that a conclusion should be accepted because the majority of people think it is true (Davis, 2007). Appeal to pity requires a conclusion to be accepted because of the situation of the person making the conclusion (Davis, 2007). It is unlikely for someone who has studied logic to be fooled by these kinds of fallacies. The people presenting these arguments assume that viewers luck adequate, logical skills, to see through their fallacy. This is a terribly dangerous assumption because it can easily backfire on

Mongols Essay Example | Topics and Well Written Essays - 250 words

Mongols - Essay Example For goods to fetch better prices in case of there is a low demand for the product, traders usually venture into some organizations that would help them make a sale. First, traders usually form cartels that will enable them create a monopolistic nature of the market (Rashdall, 1895, p. 150). This action will enable them to be the only stake holders in the market and any buyer can only get the commodity from them. Secondly, traders in the cartel group can easily get the support of the government when they want to remain relevant in the market, they do use the influence of the government so that they can get protection since they are able to show good skills and professionalism. Professionalism arises from apprentice where fellows are taught the skills through learning. Skills mainly consist of curving products from precious metals such as gold. In this venture, having a religious back up was previously considered to be very important as most of the countries were governed by laws relating to a particular religious groups. Religion still remains important today especially if the commodities are consumed by the state that holds a strong religious belief such as the Arab world, the Latin America and the Asians who majority lag behind a particular religion (Richardson, 2001, p. 213). This may not be the case to other countries who do not value religion as they allow freedom of worship. Having support from the religious group means a success in your

Meaning of Jane Eyre as a Whole

Meaning of Jane Eyre as a Whole The whole of the work is a critique of Victorian Englands social hierarchy and inequality for women. Jane struggles against social class and gender inequality, both of which she considers great injustices. Free Response Question (Year and Paraphrase of Question) 1997. Novels and plays often include scenes of weddings, funerals, parties, and other social occasions. Such scenes may reveal the values of the characters and the society in which they live. Select a novel or play that includes such a scene and, in a focused essay, discuss the contribution the scene makes to the meaning of the work as a whole. You may choose a work from the list below or another novel or play of literary merit. Opening Sentence for (your) Essay (Be prepared to write an essay on this novel at any given time during the quarter!) In the novel, Jane Eyre, a certain scene depicts Victorian Englands social class hierarchy. This scene is of when Mr. Rochester brings a party of distinguished gentry and ladies to his home and they all converse and relax in his parlor. In the scene, they indulge in their own splendor and think nothing of those who are considered to be in a lower social class than they. Their treatment of Jane, whom they consider beneath them, reveals just how little the higher classes of the time regarded those of lower classes. This value of social class in the society where they life greatly adds to the meaning of the work as a whole. Key Plot Incidents Jane Eyre is an orphan living with her terrible aunt, Mrs. Reed. In that home she is treated cruelly and disliked by all but Bessie, a servant in the home. One day, Jane is hit by John Reed, and she loses it and attacks him. As punishment for starting the fight she is sent to the red room where she has a vision of her dead uncles ghost she screams and faints. She wakes up in the care of Bessie and Mr. Lloyd, who makes the suggestion of Jane attending school. Mrs. Reed does so after Jane goes on a spiteful tirade against her. At Lowood School, Jane finds a miserable situation. The school is in horrible condition with inadequate means for survival and stern rules installed by the hypocritical headmaster, Mr. Brocklehurst. Jane has a dear friend there, Helen Burns. This angelic friend dies of consumption when an epidemic of typhus sweeps Lowood. So many girls die, it attracts the attention of the public who discover the horrible living conditions. Brocklehurst is replaced by better men. Jane stays for six more years as a student and then two as a teacher. She soon desires new experience after her time there and after her idol, Miss Temple, marries and leaves. Jane puts out an advertisement and is soon employed as a governess at Thornfield Hall. She teaches an illegitimate little French girl named Adele and meets the housekeeper, Mrs. Fairfax, both of who she befriends. The gentleman at Thornfield is Mr. Rochester, a dark and moody man. He and Jane have deep conversations often and confine in each other. Jane sees his flaws but falls in love with Mr. Rochester. One night she saves his life from a fire which creates a mystery for Jane concerning Grace Poole, a servant. Jane concludes that she is unaware of all the facts. One day, Mr. Rochester brings home a party of gentry and fine ladies. They stay for a couple of weeks. Jane is in silent despair as she sees Mr. Rochester fancy a beautiful but vicious woman, Blanche Ingram, and expects them to me married soon. Jane begins to make arrangements to leave Thornfield but then Rochester confesses love for Jane and proposes to her. She joyfully accepts. Their wedding day is ruined by the announcement that Rochester is already married. Mr. Mason, when attaining knowledge of Mr. Rochesters intentions concerning Jane, made it known that Mr. Rochester is married to Bertha, Mr. Masons sister, who is insane and who Mr. Rochester has kept hidden in the third story of his house. Jane, a strong defender of morality, cannot stay with Mr. Rochester, who is a great temptation. In the night she flees from Thornfield. She has nothing and is reduced to begging and is received by no one. Finally, when she is on the verge of death, she is taken in by three siblings, Mary, Diana, and St. John Rivers, at their manner, Marsh End. She becomes very close to them, especially the sisters. St. John finds employment for Jane as the teacher in a school for poor girls. One night, St. John comes and tells Jane, after discovering her identity, that she has inherited a large fortune of 20,000 pounds from her uncle, John Eyre. She also learns that she and the Rivers are cousins and is thrilled. She splits her fortune with her beloved relatives. As she lives with the Rivers she studies with Mary and Diana until St. John entices her to do so with him. She does and he soon asks her to accompany him to India as a missionary and his wife. She will not go as his wife because she does not love him. One night when he as almost convinced her to marry him, she hears Mr. Rochester cry out her name and she returns the call. The next morning, she sets out for Thornfield and her love. Upon arrival she discovers that Thornfield has been burned to the ground by Bertha, who jumped off the roof, killing herself. Mr. Rochester was stricken blind and crippled (he lost his hand) in the fire will trying to save all the servants and Bertha. He now lived with only two of his trusted servants in a dark place, Ferndean. Jane goes to him and they love as they did before. They are soon married and the story end with Janes short recount of the next ten happy years. Key Characters (Who and Why) Jane Eyre- Intelligent, moral, and opposes the injustice of oppression and inequality. She is plain but engaging and seeks fulfillment. She maintains high values throughout the whole book. She is a metaphorical challenge against Victorian treatment of women and those who are poverty stricken Edward Rochester- Master of Thornfield and wealthy employer of Jane Eyre. He is passionate, dark, and secretive. Jane falls in love with him and he loves Jane. Despite societal norms, he marries her. Before Jane, his life was reckless and lost. He was moody and miserable. St. John Rivers- Janes benefactor when she had nothing. Also her cousin and deliverer of good news. He is devoted to God. He wishes to be a missionary in India and asks Jane to accompany him as his wife. He is cold and ambitious. He is handsome. There are many other characters, with smaller roles, who come in and out of Janes life. Setting(s) Gateshead- Mrs. Reeds home. Jane grew up there for ten years. Lowood-the miserable school Jane attended and taught at. She gained her education and values there. Thornfield- The home where Jane was a governess. She finds a place there and falls in love. Mr. Rochesters home. Marsh End- the home of Mary, Dianna, and St. John Rivers. Becomes Janes home after she inherits her fortune. Significance of Opening Scene The significance of the opening scene is to establish Janes first thoughts of injustice and the beginning of the development of her high morals and her sense of right and wrong. Significance of Closing Scene Jane is rewarded for her living of high values and morality with the love of her life. Her reward is just. Style of Narration/Point of View The point of view is first person. It is from Jane herself. She narrates as though she is telling her life story from far in her future. Theme(s) Love vs. Autonomy- Jane longs to be loved, not only romantically, but by family. She wants to belong but not enough that she will lose her autonomy. Her fear of losing her connection to God motivates her to flee from temptation (Rochester). Religion- Jane is very religious. She struggles, throughout her story, to balance her desire to serve her God and with her desire to serve herself. Jane is very strong in her faith and has high principles as a result. She meets three religious figures. Mr. Brocklehurst represents hypocrisy and the danger of the Evangelical religious movement. Helen Burns represents passive hope and trust in God. St. John Rivers represents finding glory in God and self-importance. Jane does not accept any of these. Symbols(s) Bertha- Serves as a symbol of Rochesters unhappiness, and tribulation for Jane. Bertha is Janes trial. Bertha is also a symbolic critique of Englands locking away of other inferior cultures. Bertha represents Victorian wives who are kept under tight leash. The Red Room- symbolic of struggles Jane must overcome. Jane recalls the Red Room every time she is struggling. Janes desire to find more fulfillment in her life is symbolic of all feminine unrest. Tone A slap in the face of injustices. Deep-rooted misery and search for fulfillment.