presentatiion on leafs

2. Morphology is a branch of biology
dealing with the study of the form
and structure of organisms and their
specific structural features.
 This includes aspects of the outward
appearance(shape,structure,colour,pat
tern), i.e.External morphology as well
as the form and structure of the
internal parts i.e. Internal
morphology or Anatomy.

3. Leaf is an organ of vascular
plant and is the principal
lateral appendage of the stem.
The leaves and stem together
form a shoot. Foliage is a
mass noun that refers to
leaves collectively.

5.  A structurally complete leaf
consists of a Petiole (leaf
stalk), a Lamina(leaf
blade) and Stipules(small
structures located to either
side of the base of the
petiole)
 The petiole mechanically
links the leaf to the plant
and provides the route for
transfer of water and
sugars to and from the leaf.
The lamina is typically the
location of the majority of
photosynthesis.

6. EPIDERMIS:
The epidermis is
the outer layer of
cells covering the
leaf. It is covered
with a waxy
cuticle which is
impermeable to
liquid water and
water vapor and
forms the
boundary
separating the
plant’s inner
cells from the
external world.
EPIDERMAL CELLS
CROSSSECTIONOFA LEAF