Class 11 Biology Chapter 5 Morphology of Flowering Plants – Revision Notes

Plant morphology in this chapter walks through root and stem modifications, leaf venation patterns, the four floral whorls, and how fruit and seed structure differ between plant groups.

Last Updated: September 23, 2026

Root and Stem

• Tap root (dicots) vs fibrous root (monocots).
• Stem modifications: rhizome, tuber, bulb, corm, tendril, thorn.

Leaf

• Venation: reticulate (dicots), parallel (monocots).

Flower

• Whorls: calyx, corolla, androecium, gynoecium.
• Actinomorphic (radial) vs zygomorphic (bilateral) symmetry.

Fruit and Seed

• Fruit=pericarp+seeds. Albuminous (endosperm retained) vs exalbuminous seeds.

One-Line Summary

Flowering plant morphology examines the external structure and diverse modifications of roots, stems, leaves, flowers, fruits, and seeds, which serve functions from storage to defense to reproduction.

Frequently Asked Questions

What is morphology, and why is it studied separately from anatomy in this chapter?
Morphology is the study of the external form and structure of an organism, focusing on visible parts like roots, stems, leaves, and flowers, while anatomy studies internal tissue structure.

What are the main differences between a tap root system and a fibrous root system?
A tap root system has one main root growing deep into the soil with smaller lateral roots, typically found in dicots, while a fibrous root system has many thin roots of similar size arising from the base of the stem, typically found in monocots.

Written by Satish

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