It is crucial to avoid air bubbles in the assembled potometer. The plant stem must be cut underwater to prevent airlocks forming in the xylem. All fittings must be tight so that the only way the apparatus can lose water is by the plant transpiring.
An instrument used for measuring rate of Transpiration occurring from lower surface of leaf.
Thus, All fittings must be tight so that the only way the apparatus can lose water is by the plant transpiring.
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