1. Flowering Plants: Monocot versus Dicots

2. Monocots & Dicots
Botanists are able to divide the 235,000 species of angiosperms 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

4. Cotyledon (seed leaf) Monocots versus Dicots
One cotyledon (seed leaf)
Two cotyledons (seed leaves)

5. The veins of monocot leaves are parallel to each other
The leaves of dicots usually have netlike veins

6. Leaves Monocot versus Dicots
Base of a Monocot Leaf: Note the Sheath which connects the Blade to the Stem
Typical Dicot Leaf with Reticulate (Net) Venation

7. Monocot Examples Tulips, daffodils, irises, lilies, palm trees
Do you see
veins that are
parallel?

8. Dicot Examples
Buttercups, peas, roses, sunflowers, maple trees, and dandelions
Do you see the
netlike veins?

9. Which is which? A is _____________ B is __________ Monocot then dicot

10. Stems Monocot versus Dicot
Cross Section of a typical Dicot Stem
Cross Section of Corn which is a typical Monocot

11. Root System Dicot versus Monocots

12. Floral Parts Monocots versus Dicots

14. Eudicotyledons What’s the difference from dicots? Not much
Pollen Structure:
Eudicots – (tricolpates)3 or more pores set in furrows
Monocots, paleodicots – single pore set in a differentially oriented groove