This waxy structure is present in some plants, such as holly, for protection.

These allow air to move into and out of leaves as well as regulate transpiration.

This layer of the leaf is the covering for the upper and lower surfaces of the leaf and is sometimes covered in a waxy structure.

These extensions on the epidermis of a leaf slow water loss and sometimes produce toxic chemicals.

These cells open and close the stomata regulate the flow of gases, particularly water vapor.

The middle portion of the leaf where photosynthesis takes place

These contain vascular tissue, xylem and phloem, within the leaf

Straight lines of veins in a leaf denote

Branching lines of veins in a leaf similar to the crown of deciduous trees denote

This is the process by which a plant loses water vapor through its leaves and stems

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