4 ANGIOSPERMS Angiosperm means “covered seed” Have flowers Have fruits with seedsLive everywhere – dominant plants in the world260,000 species (88% of Plant Kingdom)Angiosperms are the most successful and advanced plants on earth
5 Monocot vs. dicot Angiosperms are divided into monocots and dicots The first leaves first of a young plant develop and are called as cotyledons (seed leaves)Monocots have one cotyledon (corn, lily, etc).Dicots have two cotyledons (bean, oak, etc).
6 Comparing monocot vs. dicot plants FEATUREMONOCOTSDICOTSCotyledons12Leaf venationparallelbroadRoot systemFibrousTapNumber of floral partsIn 3’sIn 4’s or 5’sVascular bundle positionScatteredArranged in a circleWoody or herbaceousHerbaceousEither
10 Monocot and Dicot Leaves Monocots – blade like leaf blade – wrap around the stem – no petiole – have main vascular bundles running parallel along length of leafDicots – Have both a leaf blade and a petiole – single midrib (Vascular bundles) with branches
11 Roots from Seeds Dicots form one primary root Monocots branch to form the fibrous root
12 RootsTap RootHave a main central root and may have some lateral branching
13 RootsFibrousHave many roots of equal size and a lot of lateral branchingFibrous roots are generally much more diffuse and closer to the surface
14 Flowers Dicots –have sepals and/or petals in multiples of four or five Monocots – have sepals in multiples of threes