See abscisic acid.參閱abscisic acid。...[繼續(xù)閱讀]

    See sarcomere.參閱sarcomere。...[繼續(xù)閱讀]

    transport protein ATP-binding cas-sette transport protein;any of a large familyof ATP-powered TRANSPORT PROTEINSthat move substances across cell membranes.Found in a wide variety of organisms,theyhave a common basic structure consisting oftwo transmembran...[繼續(xù)閱讀]

    The development of living fromnonliving matter,as in the origin of life.在生命的起源,從非生命物質(zhì)演化出生命的過程。...[繼續(xù)閱讀]

    A plant hormone thatis involved in seed development and in theclosure of leaf pores (stomata) in response todrought stress. Abscisic acid is thought to in-duce the formation of storage proteins duringthe later stages of seed maturation,and mightalso help ...[繼續(xù)閱讀]

    The shedding of part of a plant,usually a leaf,fruit,or unfertilized flower,aspart of the plants usual life cycle. As the leafor other organ ages,a distinct abscission zonedevelops at the base of the organ. This zoneconsists of relatively smaller cells,wh...[繼續(xù)閱讀]

    spectrum A graph showing theabsorbance by a substance of radiation at dif-ferent wavelengths,usually of ultraviolet,visible,or infrared radiation.It is obtainedusing a SPECTROPHOTOMETER,and cangive information about the identity or quantityof a substance....[繼續(xù)閱讀]

    Any ofseveral specialized epidermal cells found ad-jacent to each pair of GUARD CELLS in theleaves and other parts of plants. Accessorycells may help in opening and closing the ac-companying pore (stoma).任何特化的表皮細(xì)胞,與植物葉或其他部分的副衛(wèi)細(xì)胞相鄰。副衛(wèi)細(xì)胞可以幫...[繼續(xù)閱讀]

    See photosynthetic pig-ments.參閱photosynthetic pig-ments。...[繼續(xù)閱讀]

    See adaptation.(作用) 參閱adaptation。...[繼續(xù)閱讀]