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Casparian strips

The following three points will highlight the three major pathways of water movement in roots with diagram. This allows direct cytoplasm-to-cytoplasm flow of water and other nutrients along concentration gradients. In particular, it is used in the root systems to bring in nutrients from soil. It moves these solutes from epidermis cells through the cortex into the endodermis and eventually the pericycle, where it can be moved into the xylem for long distance transport. Specifically there are three pathways of water passage from root hairs to xylem inside the root:. Here water passes from root hair to xylem through the walls of intervening cells without crossing any membrane or cytoplasm.
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Casparian strips | Article about Casparian strips by The Free Dictionary

The endodermis is the central, innermost layer of cortex in land plants. It is a cylinder of compact living cells, the radial walls of which are impregnated with hydrophobic substances Casparian strip to restrict apoplastic flow of water to the inside. In many seedless vascular plants, the endodermis is a distinctly visible layer of cells immediately outside the vascular cylinder stele in roots and shoots. In most seed plants, especially woody types, an endodermis is absent from the stems but is present in roots. The endodermis helps regulate the movement of water, ions and hormones into and out of the vascular system. It may also store starch, be involved in perception of gravity and protect the plant against toxins moving into the vascular system.
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Q. Casparian strips are present in the.......... of the root.

The internal structure of the stem is more complex. Stem is differentiated into nodes and internodes. The leaves are inserted on the nodes. Stem has three fundamental systems.
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Root hair cell is an offshoot of a hair-forming cell of the epidermis. It is mainly considered an exclusive feature of plants, but its contemporary is also found in animal species. Root hairs are essentially the lateral extensions formed by the divisions in the basal root hair cells, visible to the naked eye.
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