The apical meristem lengthens up and down it is

The apical meristem lengthens up and down. It is responsible for
primary growth.
1

2. Lateral meristem : located at branches to increase plant girth. It is
responsible for secondary growth.
Angiosperm Body Plan
View the representative plants on display in the lab. Notice that the plants
have aboveground and belowground portions. The shoot system is
aboveground. What components of the plan comprise the shoot system?
The root system is belowground. State two functions of plant roots.
Angiosperms are divided into two different groups, monocots and
eudicots. These groups differ based on tissue organization in the seed,
root, stem, leaf and flowers. For example, monocots have leaf veins that
form a parallel patter and flower parts in multiples of threes. Eudicots have
leaf veins in a net pattern and flower parts in multiples of fours or fives.
Using this information, identify the live plants on display as either monocots
or eudicots filling in the table below.
Monocots Eudicots
Stem- ring-cortex pith
Root-x or start shape V.C.
Leaf-Netlike
Stem- Evenly distributed
Root-Circular V.C. Pith
Leaf- Parallel
Root
There are two main root arrangements. Most monocots have a fibrous root
system where all of the roots are about the same size. Many eudicots have a
taproot system with one very large main root and smaller roots branching
off. A carrot is an example of a taproot.
2

View the monocot and eudicot roots models on display and the cross section
slides of the monocot and eudicot root. Identify the following structures:
Root cap Cortex
Root hairs Endoder
mis
Zone of cell division Pith
Zone of elongation Pericycle
Zone of maturation Epidermi
s
Xylem Phloem
Use the space on the next page to draw and label the cross section of the
monocot and eudicot root slides.
3

Why is the root cap necessary?
It protects the roots as it lengthens
How does the arrangement of xylem and phloem differ in the monocot
verses the eudicot root?