24. Modified root of plant

This is a picture of Bald Cypress "knees", a modified root of a plant. Roots typically provide soil nutrients and support to plants. In the case of the Bald Cypress, which typically lives in southern swamps, the roots are often completely submerged. This inhibits gas exchange. The Bald Cypress has adapted skyward-shooting "knees" to allow for gas exchange. In this way, the Bald Cypress is a good example of a modified root.