6. Consists of the epidermis and the
periderm
Epidermis is a single layer of closely
packed cells
It also covers and protects the plant
7. Epidermis of the plant’s leaves secretes a
coating called cuticle
Cuticle helps the plant retain water
Guard cells in the epidermis regulate gas
exchange between the plants and the
environment
8.
9. It synthesize organic compounds
Supports and provide storage for the
plant
It is made up of Parenchyma,
Collenchyma and sclerenchyma cells
10. Parenchyma cells synthesize and store
organic products in the plants
Parenchyma cells in leaves control
photosynthesis
Collenchyma cells have a support
function in plants
11. They do not restrain growth due to their
lack of secondary cells and absence of
a hardening agent in their primary walls
Sclerenchyma cells also have support
function in plants but they have a
hardening agent and are much more
rigid
12.
13. It is made up of xylem and phloem
The xylem and phloem allows water and
other nutrients to be transported
throughout the plant
Xylem is made up of two cells called
tracheids and vessel elements
14. Tracheids and vessel elements form tube
shaped structures that provide pathways
for water and minerals to travel from the
roots to the leaves
Tracheids are found in all vascular plants
Vessels are found only in angiosperms
15. Tracheids are non-living
Phloem consists of cells called sieve
tubes and companion cells
The cells assist in the transportation of
nutrients and sugar produced during
photosynthesis from leaves to the other
parts of the plant
16. Sieve-tubes and companion cells of
phloem are living
Companion cells contain nucleus and
actively transport sugar into and out of
the sieve tubes