Biology · Class 11 · Chapter 5
Morphology of Flowering Plants
13 lessons 97 min 2 simulations
Every angiosperm, however different it looks, is built from roots, stems, leaves, flowers and fruits. This chapter gives the standard terms for describing each of these organs and their variations, from root regions and leaf venation to aestivation, placentation and seed structure, and ends by showing how a whole plant is written up as a semi-technical description with a floral formula, using the potato family Solanaceae.
What the exam asks
NEET turns this chapter into example-matching: which plant shows twisted aestivation, axile placentation, an inferior ovary, diadelphous stamens or whorled phyllotaxy. It also asks for the parts of dicot and monocot seeds (scutellum, coleoptile, aleurone layer), the layers of a drupe, and how to read a floral formula. Marks are lost on near-identical pairs: racemose versus cymose order, leaflet versus leaf, epipetalous versus epiphyllous, and the endospermic status of castor, pea and orchid seeds.
Lessons
13 lessons · 97 min
1Root systems and the root tipNCERT §5.1, §5.1.1, Figures 5.1–5.37 min2The stemNCERT §5.26 min3Leaf parts and venationNCERT §5.3, §5.3.1, Figure 5.46 min4Compound leaves and phyllotaxyNCERT §5.3.2, §5.3.3, Figures 5.5–5.67 min5Racemose and cymose inflorescenceNCERT §5.4, Figures 5.7–5.87 min6Flower whorls and symmetryNCERT §5.5, §5.5.1, Figure 5.106 min7Ovary position on the thalamusNCERT §5.5, Figure 5.99 min 1 sim8Calyx, corolla and aestivationNCERT §5.5.1.1, §5.5.1.2, Figure 5.116 min9AndroeciumNCERT §5.5.1.36 min10Gynoecium and placentationNCERT §5.5.1.4, Figure 5.1210 min 1 sim11Fruit and seedNCERT §5.6, §5.7, Figures 5.13–5.157 min12Floral formula and SolanaceaeNCERT §5.8, §5.9, Figures 5.16–5.177 min13Chapter reviewMust-know facts, traps and formulas13 min