Stoma

A minute opening bordered by guard cells in the epidermis of leaves and stems through which gasses pass. {They can be blocked by soap or chemical sprays.} Stomata allow the plant to breath. Related Images:

Internode

The area of the stem that is between the nodes. Related Images:

Apical meristem

Area of the plant shoot and root tips where cells actively divide to provide more cells that will expand and develop into the tissues and organs of the plant. Also called shoot meristem. Related Images: