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Botany |
Record 126 to 142 of 142 |
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Stored Food "Diagram to show path of stored food upward through the tracheal tubes, and through the phloem portion of the bark, and showing how this passage is not prevented by girdling." -Stevens, 1916... |
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Thorn A thorn of a plant.... |
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Tissues, Plant "Diagram showing the evolution of tissues from the primordial meristem down to the beginning of cambial activity." -Stevens, 1916... |
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Vascular Bundle, Collateral Types of vascular bundles: "B, the collateral type, with phloem, h, standing in front of the xylem, k." -Stevens, 1916... |
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Vascular Bundle, Concentric Types of vascular bundles: "A, the concentric type, with xylem, k, surrounding the phloem, h." -Stevens, 1916... |
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Vascular Bundle, Radial Types of vascular bundles: "C, a portion of the radial type, shown complete in D, where the part outlined at a, corresponds to C. Corresponding parts are lettered the same in both figures; c, xylem; b... |
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Vascular Bundles "Diagram showing how the vascular bundles anastomose around the medullary rays. The gaps represent the rays." -Stevens, 1916... |
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Vein, Plant "Diagram indicating the succession of the conducting tissues of a vein from the base toward the apex. a, border parenchyma; b, companion cells; c, sieve tubes; d, undivided mother cells of companion c... |
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Vernation "Types of vernation. 1, 2, cherry; 3, 4, European walnut; 5, 6, snowball; 7, lady's mantle; 8, oxalis." -Bergen, 1896... |
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Water Flow in Plants "Diagram to show the tangential flow of water from the side where there is less demand to the side where the demand is greater." -Stevens, 1916... |
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Water Flow in Plants "Diagram showing by the arrows how the water can flow tangentially around a plant without traversing the medullary rays, which are indicated in black." -Stevens, 1916... |
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Water Flow in Plants "Diagram showing the relation of the water-carrying tissues of the leaves to those of the stem, and how the older rings of growth give up their water to the newer before this water can enter the leave... |
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Woody Plant, Root-Grafting of Grafting is a method of asexual plant propagation widely used in agriculture and horticulture where the tissues of one plant are encouraged to fuse with those of another. Pictured here is the root-gra... |
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Xylem Development 1 "Stages in the development of the elements of the xylem. A, progressive steps in the development of a tracheal tube. 1, row of procambial or cambial cells that are to take part in the formation of a t... |
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Xylem Development 2 Stages in the development of the elements of the xylem. "B, stages in the formation of tracheids from procambial or cambial cells. The steps are the same as in A, excepting that the cross-walls remain... |
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Xylem Development 3 Stages in the development of the elements of the xylem. "C, steps in the development of wood fibers from cambial cells; 1, cambial cells; 2, the same grown larger in all dimensions with cells shoving ... |
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Xylem Development 4 Stages in the development of the elements of the xylem. "D, steps in the formation of wood parenchyma from cambial or procambial cells. 1, group of cambial or procambial cells; 2, the same enlarged in... |
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