Download Inside Leaves

Structure of
Plants
Leaves
• Blade
• Veins
– midrib
• Petiole
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Leaves
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• Is this leaf simple or
compound?
– simple
• What is this structure
that connects the leaf
to the stem?
– petiole
• What is this central
vein called?
– midrib
• Is this leaf simple or compound?
– Compound
• Is this pinnately or palmately compound?
– Palmately
• Does this plant have simple
or compound leaves?
– Simple
• How are the leaves
arranged?
– Opposite arrangement
• Are these leaves simple
or compound?
– Compound
• How are the leaves
arranged?
– Alternate arrangement
Inside Leaves
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• What is the
primary
function of the
cuticle?
– Prevent water
loss
Inside Leaves
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• What is the
primary
function of the
xylem?
– Transport of
water
Inside Leaves
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• What is the
primary
function of the
phloem?
– Transport of
sugars
Inside Leaves
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• What is the
primary
function of the
guard cells?
– Open and
close the
stomata
stomata
Stems
• Two functions:
– Support leaves and flowers
– Transport water and nutrients within the plants
• Leaves attach at nodes
• Woody or herbaceous
– Woody - trees,
shrubs, and vines
Roots
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• Typically the portion of the
plant that grows below the
surface of the soil
• Absorb water and minerals
from the soil
• Root hairs increase the
surface area
Roots
• Two types
– Taproot - single central root with much
smaller side roots branching out from it;
reaches deep to tap groundwater
– Fibrous root - clump of threadlike, shorter
root divisions; collect water and minerals
from a shallow but wide area
Roots
• Taproot
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• Fibrous root
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Flowers
• The reproductive organ of a
flowering plant
• Function to produce gametes
and provide a structure for
fertilization
• Pollen is a carrier of sperm
• Pollination - the process of
transporting pollen from the
male to female flower parts
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Seeds
• Reproductive structure consisting of a
plant embryo and its stored food.
• Plants have various ways of dispersing,
or spreading, their seeds.
• In flowering plants, the seed develops in
a structure called a fruit.
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Kingdom Plantae
nonvascular vascular
seedless
seed
gymnosperms angiosperms
monocots
dicots