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英语介绍植物各部分名称以及功能

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英语介绍植物各部分名称以及功能

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  • 2019-04-06 22:08:07
      Plant cell internal structure can be divided into: cell wall, cell membrane, cytoplasm and nucleus。Compared to animal cells and plant cells, there is no cell wall, structure and function of each part and other similar plant cells。
      In all parts of cell structure function is introduced:A, cell wall: fixed on cell morphology, support and protect the internal structure:1, to maintain cell shape, control cell growth cell wall increased mechanical strength, and under internal protoplast because of vacuoles absorb water and produce turgor pressure, so that the cell has a certain shape, it's not only protect the protoplast, and maintain the organs with the inherent form of the plant。
       In addition, the wall control the cell growth, because cells to expand and elongation of the premise is to make the cell walls of relaxation and irreversible stretching。
      2, the cell walls of material transportation and information transmission allows, polysaccharide and other small molecules and ions by low molecular weight protein, and large molecules or microorganisms such as resistance to the outside。
       Therefore, cell wall are involved in the material transportation, reduce transpiration, prevent moisture loss (secondary wax on the surface of the wall, etc。
      ), plant water potential adjustment and a series of physiological activities。 Pit on the cell wall or plasmodesmata size affected by the intensity of cell physiological age and metabolic activity, so the cell walls of transport has a regulatory role of intercellular substance。
       In addition, the cell wall is also a chemical signal (hormone, growth regulator, etc。), physical signals (wave, pressure, etc。
      ) transmission medium and pathways。3, the cell walls of defense and resistance in some segments of oligosaccharides can induce the formation of plant protection element (phytoalexin), they also have a regulatory role on other physiological processes, with the fragments of regulating the activity of oligosaccharides called oligosaccharides (oligosaccharin)。
       Will a heptyl glycosidase applying soy oligosaccharides element cell, can make responsible for synthetic gene activation of antimicrobial inhibited the growth of the mold and produce antibiotics。
       The function of a variety of oligosaccharide, complex and diverse, such as some factor known as protease inhibitors, play a role in plant resistance to plant diseases and insect pests; Some oligosaccharides can make plants produce allergic death, which kept the pathogens from further proliferation; And oligosaccharides element involved in the regulation of plant morphogenesis。
       Stretch of cell wall proteins except as structural components, and preventing the function of art。 Such as resistance of cucumber varieties infection after a mold, its cell wall of hydroxyproline content in the sensitive varieties increase faster than。
      4, other function: in the cell wall enzymes are widely involved in the synthesis of cell wall polymer, transfer, hydrolysis, extracellular material conveying and defensive role within the cell。
      Second, the cell membrane, material in and out of the cell channel; Biological information communication, the basis of material exchange; Cell membrane has important physiological functions, it even the stability of the cell metabolism of intracellular environment, can adjust again and select material in and out of the cell。
       The cell membrane by pinocytosis (pinocytosis), phagocytosis (phagocytosis) or cell function (exocytosis) vomit, absorption, digestion and discharge of the cell membrane outside material。
       In the cell recognition, signal transmission, cellulose synthesis and microfibril assembly, etc。, plasma membrane also play an important role。
       Some intercellular communication is not accomplished by receptors on the cell membrane, such as certain cells secrete sterols substances, these substances can be used as a signal, exchange of information with other cells, but the material is not and receptors on the cell membrane, but through the cell membrane, and the nucleus or certain receptors in the cytoplasm, thus mediated exchange of information between two cells。
       So the physiological function of cell membrane is not very great。 Is only used to protect the cells。Three, the cytoplasm: provide cells with water, inorganic salt and other nutrients, Cytoplasmic matrix is also called the cytoplasmic sol (cytosol) is homogeneous in the cytoplasm and translucent colloidal part, filling between other physical structure。
      Four, the nucleus: control cell growth and reproduction。 The nucleus is the genetic information database, is the control center of the cell metabolism and genetic。
      1。 Storage and genetic material is copied。 Can be seen from the structure of the nucleus, the nucleus of chromatin, is the most important structure of the components of chromatin is protein and DNA molecules, and DNA molecules is the main genetic material。
       When the genetic material to transfer must be replicated in the nucleus。 So, the nucleus is the genetic material storage and replication。
      2。 The cell genetic and metabolic activity of control center。 Through genetic material is copied onto their offspring after, at the same time, the genetic material must also will show the biological traits of its control, the vast majority of these genetic material exists in the nucleus。
       So, the nucleus and cells, genetic and cellular metabolic activity control center。

其他答案

    2019-04-06 22:40:38
  •   中文名称满天星 
    分布区域原产地中海地区
    别 ? ?称丝石竹、霞草、锥花丝石竹、圆锥石头花
    花 ? ?语清纯、关怀、思恋、配角、真爱
    门被子植物门(Angiospermae)
    二名法Gimpsophylla paniculata
    界植物界
    科石竹科(Caryophyllaceae)
    拉丁学名Gypsophila
    英文名Baby's breath
    纲双子叶植物纲(Dicotyledoneae),又称木兰纲

    花 ? ?色白色、粉色、红色
    园林用途花丛、花境、地被、岩石园、切花
    亚 ? ?纲石竹亚纲(Caryophyllidae)
    目石竹目(Caryophyllales) ,亦称中央胎座目(Centrospermae)
    属丝石竹属(Gypsophila L。
      )
    使用方法切花、盆栽
    高度30~90cm
    花朵大小20~50cm(花穗)
    花期5~6月份
    名称由来像星星一样点缀着许多小花
    Chinese name
    Baby's breath
    Distribution area
    Native to the Mediterranean region
    Another name for
    Gypsophila, Kasumi grass, tapered filaments pink, conical stone flower
    Flower
    Pure, caring, love, supporting actor, true love
    Gate
    Angiosperms (Angiospermae)
    Two methods
    Gimpsophylla paniculata
    Community
    Vegetable Kingdom
    Section
    Pink (Caryophyllaceae)
    Latin names
    Gypsophila
    English name
    Baby's breath
    Class
    Dicotyledon (Dicotyledoneae), also called the Magnoliopsida
    Color
    White, pink, Red
    Garden use
    Flowers, flower borders, ground, rock garden, cut flowers
    Subclass
    Caryophyllidae (Caryophyllidae)
    MU
    Shi Zhumu (Caryophyllales), also known as Free Central placentation(Centrospermae)
    Genus
    Genus gypsophila (Gypsophila l。
      )
    Use method
    Cut flowers, potted plants
    Du Gao
    30~90cm
    Flower size
    20~50cm (Hua Sui)
    Flowering period
    5 ~ June
    Origin of the name
    Like the stars dotted with many small flowers。
      

    五音不全吧

    2019-04-06 22:40:38

  • 2019-04-06 22:12:34
  • 建议使用维基百科查询

    无言的小恋人

    2019-04-06 22:12:34

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