-Part of the stem that goes into a spiral to adhesion.-Occur on the node-Meet in the direction of growth.-Ability to photosynthesis.-Found in the Ivy group melon
- Part of the trunk to act energetically to hold - up area. node - the response in the direction of growth - photosynthesis can not - in the melon vines.
- part of the stem to change energetically to act based on the island.- at the node.- response according to the direction of growth.- can be synthesized by light.- found in the Ivy Group pumpkins.