Monocots & Dicots Types of Angiosperms Botany

Angiosperms  Angiosperms are flowering plants.  Angiosperms belong to the division Magnoliophyta.  Angiosperms can be divided into two classes:  Monocots-Class Liliopsida  Dicots-Class Magnoliopsida

Class Liliopsida  Class Liliopsida contains the monocots.  Monocots all have distinct features that make them different from other angiosperms.

Characteristics of Monocots  Monocots have  one cotyledon (first emerging leaf from the germinating seed; aka. Seed leaf)  Parallel veined leaves (think of the veins on a blade of grass)  Scattered primary vascular bundles  Monosulcate pollen (has one indention or dip in surface)  Flower parts in multiples of three (either have three of each or have a number that is divisible by three)

Characteristics of Monocots One Seed Leaf Inside Seed Parallel Veins on Leaf Vascular Bundles Scattered Three Petals, Three Leaves

Class Magnoliopsida  Class Magnoliopsida contains the dicots.  Dicots are unique flowers. 50% of all dicots have woody stems among their other unique features.

Characteristics of Dicots  Dicots have  Two cotyledons (seed leaves)  Net-veined leaves  Primary vascular bundles in rings  Floral parts in multiples of fives  Tricolpate pollen

Characteristics of Dicots Dicot with two cotyledons on the rightFlower parts in multiples of five Vascular bundles in rings Net-veined leaves

Contrasting Monocots & Dicots Golden Trumpet Is this a monocot or a dicot? How do you know? Iris Is this a monocot or a dicot? How do you know?

Copy and answer the ENTIRE question on your own paper.  1. You collect a flower specimen while you are out on a nature walk. It has 12 pink petals and 6 leaves with parallel veins around the flower. Would you classify this plant as a monocot or a dicot? Why?  2. While out on the same nature walk, you collect a blue flower. It has five flower petals and leaves with webbed veins. It five leaves around the petals. Would you classify this plant as a monocot or a dicot? Why?