相关概念视频
02:26Responses to Gravity and Touch
34.8K
Gravitropism: Plant Responses to Gravity
34.8K
03:02Primary and Secondary Growth in Roots and Shoots
57.2K
Vascular plants, which account for over 90% of the Earth’s vegetation, all undergo primary growth—which lengthens roots and shoots. Many land plants, notably woody plants, also undergo secondary growth—which thickens roots and shoots.
57.2K
02:27Basic Plant Anatomy: Roots, Stems, and Leaves
59.2K
The primary organs of vascular plants are roots, stems, and leaves, but these structures can be highly variable, adapted for the specific needs and environment of different plant species.
59.2K
01:19Survival Tree
88
Survival trees are a non-parametric method used in survival analysis to model the relationship between a set of covariates and the time until an event of interest occurs, often referred to as the "time-to-event" or "survival time." This method is particularly useful when dealing with censored data, where the event has not occurred for some individuals by the end of the study period, or when the exact time of the event is unknown.
Building a Survival Tree
Constructing a...
Building a Survival Tree
Constructing a...
88
02:36Meristems and Plant Growth
46.0K
Plants grow throughout their lives; this is called indeterminate growth, and it distinguishes plants from most animals. Although certain parts of plants stop growing (e.g., leaves and flowers), others grow continuously—like roots and stems.
46.0K
02:34Water and Mineral Acquisition
33.1K
Specialized tissues in plant roots have evolved to capture water, minerals, and some ions from the soil. Roots exhibit a variety of branching patterns that facilitate this process. The outermost root cells have specialized structures called root hairs that increase the root surface, thus increasing soil contact. Water can passively cross into roots, as the concentration of water in the soil is higher than that of the root tissue. Minerals, in contrast, are actively transported into root cells.
33.1K
您也可能阅读
相关文章
通过共同作者、期刊和引用图与本文相关的文章。
排序
Same journal
Erratum for the Research Article "Detecting supramolecular organic nanoparticles during heat wave".
Science (New York, N.Y.)·2026
坚持自己的根基
1Shanta Hejmadi is a senior data scientist at the Metro Transit Division of the Metropolitan Council in Minneapolis and St. Paul, Minnesota.
Science (New York, N.Y.)
|November 2, 2023
概括
No abstract available in PubMed .
