Which of the following is not one of the five zones of the deciduous forest?
a. shrub
b. animal
c. herb
d. tree stratum

The animal.

Explanation: There are 5 layers (also referred to as zones or strata) within the temperate deciduous forest. These  are

 Tree stratum, the tallest layer, sixty -100 feet high, with giant oak, maple, beech, chestnut, hickory, elm, basswood, small tree or tree layer - short tree species and young trees.

Shrub layer -  It shrubs like rhododendrons, azaleas, mountain laurels, and huckleberries.

Herb layer - short plants.

Ground layer - lichens, clubmosses, and true mosses.inden, walnut, or sweet gum trees.