[PPT]Monocot versus Dicots - klakulakbiology | Just another ... · Web viewFlowering Plants: Monocot versus Dicots 8-28-12 Plantae Kingdom Plants have: Cells Cell walls made of cellulose

Flowering Plants:Monocot versus Dicots

8-28-12

Plantae Kingdom

Plants have:

Cells Cell walls made of celluloseChloroplasts which contain chlorophyllRoots, Leaves, Stems

PhotosynthesisCO2+water+sunlight O2+glucose

Monocots & Dicots• Botanists are able to divide the 235,000

species of angiosperms(flowering plants) into two large groups based on the structure of their seeds

• Inside the seeds of angiosperms are tiny embryonic leaves called cotyledons. The seeds of one group of angiosperms have one cotyledon, called monocotyledons or monocots.

• Other angiosperms have two cotyledons. These are called dicotyledons or dicots

Cotyledon (seed leaf)Monocots versus Dicots

One cotyledon (seed leaf)

Two cotyledons (seed leaves)

LeavesMonocot versus Dicots

Base of a Monocot Leaf: Note the Sheath which connects the Blade to the Stem

Typical Dicot Leaf with Reticulate (Net) Venation

Monocot Examples• Tulips, daffodils, irises, lilies,

palm trees• Do you see veins that are parallel?

Dicot Examples

• Buttercups, peas, roses, sunflowers, maple trees, and dandelions

• Do you see the netlike veins?

Which is which?

B is __________

A is _____________

StemsMonocot versus Dicot

Cross Section of a typical Dicot Stem

Cross Section of Corn which is a typical Monocot

Root SystemDicot versus Monocots

Dicot Monocot

Floral PartsMonocots versus DicotsMonocots Dicots