Anmol Sharma is teaching live on Unacademy Plus
Class 11tlh 05. MORPHOLOGY OF FLOWERING PLANTS -ANMOL SHARMA
TARGETED STUDENTS? AlIMS NEET JIPMER CBSE BOARD EXAM . CET(COMMON ENTRANCE TEST) CLASS 11TH & CLASS 12TH
WHAT TO STUDY? . Roots . Region of Roots .Modifications of Roots . Stem Modification of Stem . Leaf Venation Types of Leaves Phyllotaxy Modification of Leaves
. Inflorescence Flower . Parts of Flower(Calyx, Corolla, Androecium & Gynoecium) * Aestivation . Fruits . Seed . Structure of a Dicotyledonous Seed . Structure of a Monocotyledonous Seed . Floral Formula
Phyllotaxy: . Phyllotaxy is the pattern of arrangement of leaves on the stem or branch. This is usually of three types . Alternate type - a single leaf arises at each node irn alternate manner. e.g., China rose, Mustard and Sun flower. . Opposite type - a pair of leaves arise at each node and lie opposite to each other. e.g., Calotropis and Guava. .Whorled type - If more than two leaves arise at a node and form a whorl. e.g., Alstonia.
Modifications of Leaves For support - converted into tendrils for climbing. e.g., peas For defense - converted into spines. e.g., cactus. For food storage - The fleshy leaves of onion and garlic. For photosynthesis (phyllode) - In some plants the leaves are small and short-lived. The petioles in these plants expand, become green and synthesise food. e.g., Australian acacia. For insectivory - pitcher plant, venus-fly trap. .