structure of plants leaves blade veins –midrib petiole

Structure of Plants

Leaves

• Blade

• Veins– midrib

• PetioleQuickTime™ and a

TIFF (Uncompressed) decompressorare needed to see this picture.

Leaves

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

• 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



Inside Leaves



• What is the primary function of the cuticle?– Prevent water

loss

Inside Leaves



• What is the primary function of the xylem?– Transport of

water

Inside Leaves



• What is the primary function of the phloem?– Transport of

sugars

Inside Leaves



• 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

• 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





• Fibrous root







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







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.


are needed to see this picture.QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.QuickTime™ and a

TIFF (Uncompressed) decompressorare needed to see this picture.

Kingdom Plantae

nonvascular vascular

seedless seed

gymnosperms angiosperms

monocots dicots

structure of plants leaves blade veins –midrib petiole

Documents

compound leaves

primary function

palmately compound

water lossinside leaveswhat

support leaves

flowerstransport water

soilabsorb water

plant embryo