Lianas are vascular plants rooted in the ground and maintain erectness of their stem by making use of other trees for support. They do not maintain direct relation with those trees. Discuss the type of association the lianas have with the trees.

Explanation

Lianas and woody climbers. These maintain their erectness and the proper orientation of their leaves for photosynthesis by climbing the host trees are neither benefited nor harmed. This type of association is called commensalism .