The cross-section of a primary stem may have a more or less angular to cir-cular outline. However, it can take on one of a wide range of forms, some of which assist in the identification of a family, as in Labiateae, where the sec-tion is square, or may help to distinguish gener...
解析 A。解析:单子叶植物茎(Monocot stem)在横切时呈现出环状模式。双子叶植物根(Dicot root)横切结构较复杂但不是环状;单子叶植物叶(Monocot leaf)横切没有这种典型的环状;双子叶植物花(Dicot flower)结构复杂,横切不会是环状模式,所以B、C、D选项错误。
cross vine- woody flowering vine of southern United States; stems show a cross in transverse section Bignonia capreolata,quartervine,quarter-vine,trumpet flower Bignonia,genus Bignonia- one species: cross vine vine- a plant with a weak stem that derives support from climbing, twining, or creeping...
Flower position8586512073.14:1 Stem length10647872772.84:1 average=2.98:1 Sign in to download full-size image Figure 1.Mendel's observations on the inheritance of a single trait that had two forms (alleles) became known as Mendel's first law, or the law of segregation. The details of meiosi...
The bore for the member is so shaped that when the member is fitted it presses against the column so as to lock itself in position. It can be of tapered section, with serrations on the edge furthest from the column to lock the member in place....
plants: 1) providing new insights into challenging problems in tissue culture, 2) exploring their regulatory effects on the growth of ornamental plants, 3) enhancing the resistance to biotic and abiotic stressors, and 4) discussing their widespread application and mechanisms in cut flower harvesting...
a你选择哪一款花型 Which section flower do you choose[translate] a我相信如果我们一起努力,食品安全问题一定可以得到完美解决 正在翻译,请等待...[translate] a我们认为学好英语有用 We thought learns English to be useful[translate] aDiesen Verkäufer speichern[translate] ...
Bright colorful blended pink red white Gerbera Daisy flower cross hybrida long stem cartwheel jaguar majorette bengal garden Nha Trang Vietnam Barberton Transvaal Veldt daisies bloom. Nature,站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容包
The yield of pepper plants (Capsicum spp.) is their most important trait and is affected by the flower number and flowering time. Capsicum annuum produces a single flower per node and has an early flowering habit. By contrast, Capsicum chinense yields mu
If you just wish to start shopping for the Michelin CrossClimate 2 tires for your Tesla Model 3, jump to the Shop Section below.TLDRThe CrossClimate 2 has replaced the already great CrossClimate+ tire that is a great choice for Tesla Model 3 owners who have to occasionally drive in th...