this is for student's use

1. CHP . 2
Plants structure and
function

2. Parts of the plants
• Roots , stem , leaves , flowers and fruits
are the parts of a plant . By studying these
parts we can identify the type and species
of plant

3. ROOT
• Part of the plant the grows under the soil for
support is called root
• There are two main types of roots a) tap root
b) fibrous root
• Dicotylendous plants have tap root
• Monocotylendous plants have fibrous roots

4. • Radicle - part of the seed which
grows from inside the seed
toward the soil is called radicle
• Plumule - part of the seed
which grows above the soil
from seed is called plumule

5. • Tap root - tap root is thicker at
the base . It tapers towards the
end . Tap root produce
secondary roots . Secondary
roots grow obliquely and
spread far and wide in the soil.
• Root hair - hair like
processesnear the root tips are
called root hairs
• Root cap - the tip of the root is
covered by a cap like sstructure
called a root cap this protects
the root tip from injuries

6. • Leaves arise from the nodes on a
stem
• Leaf blade- the broad spread out
part of leaf
• Leaf margin - edge of leaf entire ,
dentate , and lobed are some types
of leaf margins
• Leaf apex - tip of the leaf
• Petiole - the stalk of leaf some have
petioles while some do not
• Leaf base - portion of leaf attached
to the stem
• Stipules - small structure near leaf
base some have stipules while some
do not

8. • Pedicle - stalk of flower
• Calyx - outermost whorel of
floer
• Corolla - petals make the corolla
• Androecium - male reproductive
part of flower which is made up
of stamens each stamen has
anther and filament.
• Gynoecuim - femail reproductive
part of flower it is made up of
carpels each carpel consists of
stigma , style and ovary
•

9. • Pollen grains that are released from the anthers fall on the
stigma of another flower . This process is called pollination
• Fertilization - the ovules or egg cell in the ovary are fertilized
by the pollen grains fallen on stigma . This process is called
fertilization