CHAPTER V

CONDUCTING TISSUE

Vessels and tracheids 126 Annular vessels 127 Spiral vessels 127 Sclariform vessels 128 Reticulate vessels 131 Pitted vessels 131 Pitted vessels with bordered pores 131 Sieve tubes 136 Sieve plate 138 Medullary bundles, rays and cells 138 Medullary ray bundle 139 The medullary ray 139 The medullary ray cell 141 Structure of the medullary ray cells 142 Arrangement of the medullary ray cells in the medullary ray 142 Latex tubes 142 Parenchyma 144 Cortical parenchyma 147 Pith parenchyma 147 Leaf parenchyma 150 Aquatic plant parenchyma 150 Wood parenchyma 150 Phloem parenchyma 150 Palisade parenchyma 150

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