Biology · Class 11 · Chapter 5

Morphology of Flowering Plants

13 lessons112 min7 simulations10 practice questions

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.

Also called: plant morphology · root, stem and leaf · floral formula

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Lessons

13 lessons · 112 min

01Root systems and the root tipNCERT §5.1, §5.1.1, Figures 5.1–5.37 min 02The stemNCERT §5.26 min 03Leaf parts and venationNCERT §5.3, §5.3.1, Figure 5.46 min 04Compound leaves and phyllotaxyNCERT §5.3.2, §5.3.3, Figures 5.5–5.67 min 05Racemose and cymose inflorescenceNCERT §5.4, Figures 5.7–5.810 min1 sim 06Flower whorls and symmetryNCERT §5.5, §5.5.1, Figure 5.109 min1 sim 07Ovary position on the thalamusNCERT §5.5, Figure 5.99 min1 sim 08Calyx, corolla and aestivationNCERT §5.5.1.1, §5.5.1.2, Figure 5.119 min1 sim 09AndroeciumNCERT §5.5.1.39 min1 sim 10Gynoecium and placentationNCERT §5.5.1.4, Figure 5.1210 min1 sim 11Fruit and seedNCERT §5.6, §5.7, Figures 5.13–5.157 min 12Floral formula and SolanaceaeNCERT §5.8, §5.9, Figures 5.16–5.1710 min1 sim 13Chapter reviewMust-know facts, traps and formulas13 min

Simulations

7 in this chapter

Grow a floral axisIn: Racemose and cymose inflorescence How many ways can you cut a flower in half?In: Flower whorls and symmetry Where do the other whorls join?In: Ovary position on the thalamus Set the petals in the budIn: Calyx, corolla and aestivation Join the stamensIn: Androecium Where do the ovules sit?In: Gynoecium and placentation Write a floral formulaIn: Floral formula and Solanaceae