4ANGIOSPERMS 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
5Monocot 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).
6Comparing monocot vs. dicot plants FEATUREMONOCOTSDICOTSCotyledons12Leaf venationparallelbroadRoot systemFibrousTapNumber of floral partsIn 3’sIn 4’s or 5’sVascular bundle positionScatteredArranged in a circleWoody or herbaceousHerbaceousEither
10Monocot 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
11Roots from Seeds Dicots form one primary root Monocots branch to form the fibrous root
12RootsTap RootHave a main central root and may have some lateral branching
13RootsFibrousHave many roots of equal size and a lot of lateral branchingFibrous roots are generally much more diffuse and closer to the surface
14Flowers Dicots –have sepals and/or petals in multiples of four or five Monocots – have sepals in multiples of threes