In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
Q: The Casparian strip enables the endodermis to filter out harmful substances that would otherwise enter this tissue. Guttation results when increases in pressure cause the contents of this tissue to be exuded. The function of these structures is explained by the cohesion-tension theory, which involves (*) transpirational pull. This tissue is composed of tracheids and vessel elements, and dead cells that were formerly part of this tissue form wood. For ten points, name this tissue which transports water and, along with phloem, forms the plant vascular system.
A:
Science