Structure of Plants Leaves Blade Veins –midrib Petiole.

Post on 13-Jan-2016

228 views 0 download

Tags:

transcript

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

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

Inside Leaves

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

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

loss

Inside Leaves

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

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

water

Inside Leaves

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

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

sugars

Inside Leaves

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

• 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

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

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

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

• Fibrous root

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

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

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

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.

QuickTime™ and aTIFF (Uncompressed) decompressor

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