| 单词 | meristem |
| 例句 | Four major adaptations are found in all terrestrial plants: the alternation of generations, a sporangium in which the spores are formed, a gametangium that produces haploid cells, and apical meristem tissue in roots and shoots. Fundamentals of Biology 2015-01-01T00:00:00Z Figure 14.5 This apple seedling is an example of a plant in which the apical meristem gives rise to new shoots and root growth. Concepts of Biology 2013-04-25T00:00:00Z Secondary growth is characterized by an increase in thickness or girth of the plant, and is caused by cell division in the lateral meristem. Biology for AP Courses 2022-06-09T00:00:00Z Primary growth of stems is the result of the division and elongation of cells produced in the apical meristem. Miller & Levine Biology 2018-01-01T00:00:00Z Emma Erler, landscape and greenhouse field specialist at the University of New Hampshire Extension, says every plant has a meristem, a type of tissue that contains cells that can develop into different plant parts. Propagation is an inexpensive way to grow your plant collection. Here’s how to do it. 2022-02-23T05:00:00Z Primary growth adds length or height, mediated by apical meristem tissue at the tips of roots and shoots—which is difficult to show clearly in cross-sectional diagrams. Fundamentals of Biology 2015-01-01T00:00:00Z The apical meristem is a cap of cells at the shoot tip or root tip made of undifferentiated cells that continue to proliferate throughout the life of the plant. Concepts of Biology 2013-04-25T00:00:00Z When we explored mitosis in the Cell Reproduction chapter, you may have examined a root meristem under the microscope. Biology for AP Courses 2022-06-09T00:00:00Z So instead of focusing on the stem, they concentrated on the meristem, a region of plant tissue at the tip of each stem where actively dividing cells produce new growth. Cauliflower and Chaos, Fractals in Every Floret 2021-07-08T04:00:00Z Each node consists of a ring of tissue, including a patch of cells called a meristem that can divide to produce daughter cells; these elongate to form a stem segment called an internode2. Genetic drivers of high-rise rice that survives deep floods 2020-07-14T04:00:00Z Cells akin to an apical meristem actively divide and give rise to a gametophore, consisting of a photosynthetic stem and foliage-like structures. Fundamentals of Biology 2015-01-01T00:00:00Z A separate meristem, called the lateral meristem, produces cells that increase the diameter of stems and tree trunks. Concepts of Biology 2013-04-25T00:00:00Z They concluded that the signal had to travel from the apical meristem to the base of the plant. Biology for AP Courses 2022-06-09T00:00:00Z They hypothesized that making the meristem bigger would increase the number of shoots produced. Cauliflower and Chaos, Fractals in Every Floret 2021-07-08T04:00:00Z The trees grow up and out: Up, with a cell-generating region called the apical meristem, and out, with the vascular cambium. The Secret That Helps Some Trees Live More Than 1,000 Years 2020-01-13T05:00:00Z The apical meristem is made of undifferentiated cells that continue to proliferate throughout the life of the plant. Fundamentals of Biology 2015-01-01T00:00:00Z The day she curled her apical meristem around my finger, I knew she knew me. Green boughs will cover thee : Nature : Nature Research 2017-03-14T04:00:00Z Apical dominance—the inhibition of lateral bud formation—is triggered by auxins produced in the apical meristem. Biology for AP Courses 2022-06-09T00:00:00Z This process creates a chain reaction where the meristem is creating many shoots that, in turn, creates many more shoots, enacting the fractal geometry of a cauliflower. Cauliflower and Chaos, Fractals in Every Floret 2021-07-08T04:00:00Z Over time, weather or other things damage the apical meristem, limiting a tree’s height. The Secret That Helps Some Trees Live More Than 1,000 Years 2020-01-13T05:00:00Z A separate meristem, called the lateral meristem, produces cells that increase the diameter of tree trunks. Fundamentals of Biology 2015-01-01T00:00:00Z This kind of variegation results from what happens at the region at the tip of a shoot where most of the cell division and growth takes place, called the apical meristem. The Plant Had a Lovely Striation. Then They Got the Pruning Shears. 2015-12-28T05:00:00Z Cytokinins are known to delay senescence in leaf tissues, promote mitosis, and stimulate differentiation of the meristem in shoots and roots. Biology for AP Courses 2022-06-09T00:00:00Z Fruit size and other plant traits depend on what happens in the uppermost part of the stem, a growing tip called the meristem. Scientists find way to create supersized fruit 2015-05-25T04:00:00Z In plants, leaves and flowers originate from the shoot apical meristem. [Research Article] Timing Mechanism Dependent on Cell Division Is Invoked by Polycomb Eviction in Plant Stem Cells 2014-01-30T19:25:55.422Z The key to continued growth and repair of plant cells is meristem. Fundamentals of Biology 2015-01-01T00:00:00Z This is relevant because have a type of tissue called the meristem, which is where plants can sprout and is thereby important for asexual reproduction. Sci-Fi Science: Attack of the Cabbage Clones 2013-03-14T14:15:00.353Z Another effect of ABA is to promote the development of winter buds; it mediates the conversion of the apical meristem into a dormant bud. Biology for AP Courses 2022-06-09T00:00:00Z Darwin proposed that the tip of the root, the part that we call the meristem, acts like the brain does in lower , receiving sensory input and directing movement. Do Plants Think? 2012-06-05T11:15:22.920Z In wild-type plants, expression begins in the center of the floral meristem and follows cell cycle progression. [Research Article] Timing Mechanism Dependent on Cell Division Is Invoked by Polycomb Eviction in Plant Stem Cells 2014-01-30T19:25:55.422Z Often, the apical meristem of a single branch will become dominant, suppressing the growth of meristems on other branches and leading to the development of a single trunk. Fundamentals of Biology 2015-01-01T00:00:00Z The stem is traversed by numerous collateral bundles, which have a limited growth, and are constantly replaced by new bundles developed from strands of secondary meristem. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 7 "Gyantse" to "Hallel" 2011-12-26T03:00:11.613Z The increase in length of the shoot and the root is referred to as primary growth, and is the result of cell division in the shoot apical meristem. Biology for AP Courses 2022-06-09T00:00:00Z It appears at first as a simple cellular papilla of meristem, upon which an indication of two lobes soon appears. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 5 "Fleury, Claude" to "Foraker" 2011-04-03T02:00:20.883Z In an indeterminate shoot apical meristem, stem cells persist for the life of the plant. [Research Article] Timing Mechanism Dependent on Cell Division Is Invoked by Polycomb Eviction in Plant Stem Cells 2014-01-30T19:25:55.422Z Apical meristems differentiate into the three basic types of meristem tissue which correspond to the three types of tissue: protoderm produces new epidermis, ground meristem produces ground tissue, and procambium produces new xylem and phloem. Fundamentals of Biology 2015-01-01T00:00:00Z This growth in thickness results from cambium-like meristem with the formation of new cells. Northern Nut Growers Association Incorporated 39th Annual Report at Norris, Tenn. September 13-15 1948 They also control the differentiation of meristem into vascular tissue, and promote leaf development and arrangement. Biology for AP Courses 2022-06-09T00:00:00Z It isn't interest in apical cell or primary meristem that makes me fret to return to Prof. Darmstetter! The Bacillus of Beauty A Romance of To-day In a determinate meristem, a certain number of organs are produced before the meristem is terminated; this characterizes the floral meristem derived from the shoot apical meristem. [Research Article] Timing Mechanism Dependent on Cell Division Is Invoked by Polycomb Eviction in Plant Stem Cells 2014-01-30T19:25:55.422Z These three types of meristem are considered primary meristem because they allow growth in length or height, which is known as primary growth. Fundamentals of Biology 2015-01-01T00:00:00Z The key to plant growth is meristem, a type of plant tissue consisting of undifferentiated cells that can continue to divide and differentiate. Fundamentals of Biology 2015-01-01T00:00:00Z Which tissues are most likely to be stained by the dye that was injected into the lateral meristem? Biology for AP Courses 2022-06-09T00:00:00Z In woody plants, cork cambium is the outermost lateral meristem. Biology for AP Courses 2022-06-09T00:00:00Z The meristem is comprised of actively dividing cells. Biology for AP Courses 2022-06-09T00:00:00Z Cells within this area are called the apical meristem. Fundamentals of Biology 2015-01-01T00:00:00Z The zone of cell division is closest to the root tip; it is made up of the actively dividing cells of the root meristem. Biology for AP Courses 2022-06-09T00:00:00Z It protects meristem against injury and provides lubrication for the growing root to dig through soil. Biology for AP Courses 2022-06-09T00:00:00Z What is the advantage of a root cap covering the apical meristem of a root? Biology for AP Courses 2022-06-09T00:00:00Z It protects the meristem against injury and helps in absorption. Biology for AP Courses 2022-06-09T00:00:00Z A layer of cells called the root cap surrounds the apical meristem. Fundamentals of Biology 2015-01-01T00:00:00Z |
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