This website uses cookies to ensure you have the best experience. Learn more

Some General Info On The Plant Kingdom... & ... Info About Bryophytes & Seedless Vascular Plants.

1709 words - 7 pages

The Plant KingdomThe systems of classification of the plant kingdom vary in naming and placing the larger categories (even the divisions) because there is little reliable fossil evidence, as there is in the case of animals, to establish the true evolutionary relationships of and distances between these groups. However, comparisons of nucleic acid sequences in plants are now serving to clarify such relationships among plants as well as other organisms.A widely held view of plant evolution is that the ancestors of land plants were primitive algae that made their way from the ocean to freshwater, where they inhabited alternately wet-and-dry shoreline environments, eventually giving rise to such later forms as the mosses and ferns. From some remote fern ancestor, in turn, arose the seed plants.The plant kingdom traditionally was divided into two large groups, or subkingdoms, based chiefly on reproductive structure. These are the thallophytes (subkingdom Thallobionta), which do not form embryos, and the embryophytes (subkingdom Embryobionta), which do. All embryophytes and most thallophytes have a life cycle in which there are two alternating generations (see reproduction). The plant form of the thallophytes is an undifferentiated thallus lacking true roots, stems, and leaves. The subkingdom Thallobionta is composed of more than 10 divisions of algae and fungi (once considered plants). The subkingdom Embryobionta is composed of two groups: the bryophytes (liverwort and moss), division Bryophyta, which have no vascular tissues, and a group consisting of seven divisions of plants that do have vascular tissues. The Bryophyta, like other nonvascular plants, are simple in structure and lack true roots, stems, and leaves; they therefore usually live in moist places or in water.The vascular plants have true roots, stems, and leaves and a well-developed vascular system composed of xylem and phloem for transporting water and food throughout the plant; they are therefore able to inhabit land. Three of the divisions of the vascular plants are currently represented by only a very few species. They are the Psilotophyta, with only three living species; the Lycopodiophyta (club mosses); and the Equisetophyta (horsetails). All the plants of a fourth subdivision, the Rhyniophyta, are extinct. The remaining divisions include the dominant vegetation of the earth today: the ferns (see Polypodiophyta), the cone-bearing gymnosperms (see Pinophyta), and the angiosperms, or true flowering plants (see Magnoliophyta). The latter two classes, because they both bear seeds, are often collectively called spermatophytes, or seed plants.The gymnosperms are all woody perennial plants and include several orders, of which most important are the conifer, the ginkgo, and the cycad. The angiosperms are separated into the monocotyledonous plants--usually with one cotyledon per seed, scattered vascular bundles in the stem, little or no cambium, and parallel veins in the leaf--and the...

Find Another Essay On Some general info on the plant kingdom... & ... info about bryophytes & seedless vascular plants.

The Theatre of the Absurd, or slapstick comedy, a popular dramatic genre with an interesting history! This covers the origins of Absurdism, some important names and a bit of background info

704 words - 3 pages offensive) messages out to the world. For this reason, along with the fact that most absurdist pieces contain material which some would consider offensive, Theatre of the Absurd was never really allowed to reach its full potential until much more recently. However, the ideas which Kierkegaard created were carried on by numerous playwrights and especially by absurdist critic, Martin Esslin, mainly during the 1950's and 60's.The actual term "absurd

Info on the true samurai Essay

3716 words - 15 pages -style conscripted army. Samurai became Shizoku who retained some of their salaries but the right to wear katana on the street was eventually abolished.Post Meiji RestorationIn defining how a modern Japanese should be, members of the Meiji government decided to follow the footstep of United Kingdom and Germany. It would be based on the concept of "nobles oblige" and samurai would not be a political force much like that of Prussia. The Imperial

Info on ww1

451 words - 2 pages On the 28th July 1918 the great powers of Europe went to war in one of the most tragic and bloody events in all of history. The main wars on the western front were between Britain, the ruler of the worlds' largest empire covering over a quarter of the full land mass, and a new country called Germany. The reason that Britain was in the war was because it was upholding some treaties it had made some years before such as the treaty of London which

Info On Death Of A Salesman Summary

876 words - 4 pages to visit. Willy has a conversation with his wife, Linda, as he gets ready for bed. Willy cannot understand why Biff is lost, with no job and no money to his name. Willy reminisces about the past and the reader sees for the first time that Willy sometimes lapses into another era, when he talks about opening the windshield on his car. Linda suggests Willy go to the kitchen have some whipped cheese before coming to bed. Meanwhile, the

Includes info about the types of contraceptives, how reliable they are and where you can get them, effect on society around the world and societies' reaction towords them

1213 words - 5 pages devices, agents, drugs, sexual practices, or surgical procedures. There are both long-term and short-term methods of contraception. Let's start by talking about a long term contraceptive procedure known as sterilization, which unfortunately offers no protection against any kind of STDs (sexually transmitted diseases). Both men and women can be sterilized. Sterilization involves a minor operation. In a man, the sterilizing process is known as vasectomy

Overall discussion on what it does and how the memory stores info

1250 words - 5 pages information about that word: Like the look, what the word is used for, what it's made of and so on. So if you are given an appropriate input cue, the cue stimulates activity in the brain that results in the retrieval of all sorts of information stored relating to that cue.Some information retained in short-term memory is processed into long-term memory. This information on past experiences is filed away in the recesses of the mind and must be

Little info on myths and legends in the ancient Egyptian Society

522 words - 2 pages there is a vulture, wrapping his wings around her head, symbolizing her protective powers. At her bust is Tyt amulet, commonly known as an Isis-knot, a fertility symbol and a reference to her life giving powersAn older myth, "Thoth", is about Thoth, and how he helped Nut give birth.When Re's daughter, Nut, fell in love with the god Geb, Shu, the son of the sun god, became extremely jealous. To keep them from being together, he turned Nut into the

Name the three major types of vascular plants and discuss each. (Lower Vascular Plants, Gymnosperms, Division Anthophyta: Angiosperms or Flowering Plants

612 words - 2 pages Lower Vascular Plants Lower vascular plants include divisions Lycophyta, Sphenophyta, and Pterophyta. Division Lycophyta includes club mosses and ground pines. Sporophytes of these have stems covered with small, scaly leaves. Sporangia appear on the upper surface of the leaves and are structures that produce spores. Lycopods have small leaves that each contains one vein that brings water to the leaf from the roots and carries away extra food

The great depression: includes quotes, background info, main research info, an analysis, and a source list

1810 words - 7 pages . There were many books on the Great Depression, but too many other materials. There were a couple of good newspaper articles; however, there were no magazine articles. All of the books were very good. Although some of them were a little challenging, they were packed with information and they were very mostly easy to follow. There was an ok amount of information. There was probably a little more than needed, but most of the information was important

Bio of the prophet Muhammad. Info about his life, before and after the rev. in chrono. order

960 words - 4 pages in the society.THE FIRST REVELATION (610)Muhammad received his first revelation in 610. He was on the mountain of Hira, which is outside the holy city of Mecca. There, Muhammad received the first part of the Holy Quran from the angel Gabriel. Muhammad was ordered to recite some words. The first part Muhammad received is found at the beginning of Sura 96 in the Quran. It says this:Recite in the name of your Lord, who created,created mankind from

Sexuality, aggression and INTIMACY: the perfect orgasm. (see my website for info about me: www.irving-itchy-bronsky.com )

11126 words - 45 pages advice from some of the other women on the ward. The clothes she wore were always clean and pressed and supplied by the chief nurse. Babygirl had good taste and the colors she wore always matched. She refused to wear any makeup or any kind of ornaments which would have enhanced her natural beauty and well-shaped body. Yet she was a woman. No doubt about that. When sex was discussed on the ward she would freeze up. A coldness and toughness

Similar Essays

The Essay Is About The Holocaust. And How Human Rights Were Violated During This Piriod. Gives Some Genral Info On Hitler

561 words - 2 pages in Vienna he knew that Austrian Germans were a minority, but they felt superior to Jews, and other ethnic groups. Hitler soon developed the financial anti-Semitism that would later play a major role in his rise to power. After Hitler was released from prison after a failed attempt to seize power in Munich, he found enthusiastic followers among veterans and lower-middle-class people who felt frustrated about the future. The Great Depression played

This Is An Essay Providing General Info On The Influence Of The Black Panthers' Marxism On Capitalist Society. Bibliography At End, Good Quote Up Front

2018 words - 8 pages , chairman of the Black Panther party self-defense, made this statement in his 1970 publication Seize the Time. The significance of this statement is that it reveals a few things about the Panther mentality/ideology. It reveals that there was a clearly abundant Marxist perspective adopted by Seale, which is illustrated by his mentioning of "battling" imperialism with proletarian internationalism. The overemphasized language reveals their militant

General Info On The Church Of England Or Anglican Church In Australia And The Acts Of Parliament That Helped And Hindered The Settlement

1596 words - 6 pages discipline. Also, unlike the Roman Catholic church, the Church of England allows women to become priests. In 1975 the General Synod of the Anglican Church found the ordination of women to be theologically unobjectionable, although it was almost 20 years before the first women were ordained in 1994. The Church of England differs from the Eastern Orthodox church to a lesser degree. On the other hand, the Anglican church and its sister churches in

A Brief History Of The Civil Rights Movement. Including Some Biographical Info On Booker T Washington And W. E. B. Du Bois

2491 words - 10 pages intolerable, as he became more outspoken about racial injustice and began to differ with Washington over the importance of liberal arts education when the latter's emphasis on industrial education drew resources away from black liberal arts colleges. DuBois noted that Washington's accommodating program produced little real gain for the race. Another factor that alienated DuBois from Washington was the fact that Washington and his "Tuskegee