The stems of this plant are ___. A. straight B. curved C. twisted D. bent 相关知识点: 试题来源: 解析 A。本题考查植物茎的形状。B 选项 curved 弯曲的;C 选项 twisted 扭曲的;D 选项 bent 弯曲的,通常植物的茎是 straight 直的。反馈...
The stems of the plant are becoming ___. A. thinner B. stronger C. weaker D. shorter 相关知识点: 试题来源: 解析 B。植物在生长中期,枝干会变得更粗壮有力,所以选 B。A 选项 thinner(更细)、C 选项 weaker(更弱)和 D 选项 shorter(更短)都不符合植物生长中期枝干的变化。反馈...
The device, system and method are provided for the carving part of plant materials. The cutter consists of a cutting arm, whose structure is driven by the front rotation in this case, so the cutting arm can rotate around a rotation axis, almost parallel to the longitudinal axis of material...
任务型阅读 A plant has four main parts: flowers leaves stems( 茎 ) grow above ground and roots grow below ground. Roots bring water from the ground to the plant. The stem carries water
Studies of insect herbivory have mostly focused on leaf-feeding even though most woody plant biomass is stem tissue. Attack to stems has the potential to be more detrimental to plant performance than attack to leaves. Here we asked how severe is the impact of insect stem herbivory on plant pe...
The _ of a plant help it stand upright. A. leaves B. stems C. roots D. flowers 相关知识点: 试题来源: 解析 B。本题考查植物生长中期茎的作用。植物的茎帮助它直立起来。A 选项 leaves 是叶子;C 选项 roots 是根;D 选项 flowers 是花,都不能起到让植物直立的作用。
The ___ of a plant can be different colors. A. leaves B. roots C. stems D. seeds 相关知识点: 试题来源: 解析 A。植物的叶子可以是不同的颜色。选项 B“roots”是根,一般颜色比较单一;选项 C“stems”是茎,颜色也比较单一;选项 D“seeds”是种子,颜色也相对单一。反馈...
任务型阅读 A plant has four main parts: flowers leaves stems(茎) grow above ground and roots grow below ground. Roots bring water from the ground to the plant. The stem carries water from the roots to the leaves and
In vitro antileishmanial and cytotoxicity activities of essential oils from Haplophyllum tuberculatum A. Juss leaves, stems and aerial parts Plants used for traditional medicine produce diverse and complex secondary metabolites exhibiting various medicinal properties. The medicinal plantHaplophy... A Hamd...
Novel methods, apparatus and kits to provide a new presently-untapped market for state-of-the-art artificial flowers presently sold only as part of artificial plant assemblies that include artificial stems, branches, leaves, etc., the in... WP Sr. - US 被引量: 10发表: 2005年 ...