Chapter 5 of Class 11 Biology, titled Morphology of Flowering Plants, deals with the external structure and form of plants, especially angiosperms (flowering plants). This chapter covers basic terminology used in describing different plant parts like root, stem, leaf, flower, fruit, and seed. Understanding plant morphology is essential for plant identification and classification in the field of botany.
I’m writing this article because this chapter forms a strong base for both board exam preparation and competitive exams like NEET, where plant morphology carries direct application-based questions. Many students find it boring at first due to the number of terms and examples. But trust me, once you relate these terms to real plants you see around you every day—like mango, mustard, china rose—it becomes very relatable. This chapter not only improves your observation skills but also helps in practicals, herbarium work, and botanical naming. That’s why it’s important to approach it with clarity, and having the NCERT PDF ready in one place can be a huge help.
Important Topics Covered in Chapter 5
This chapter talks about different parts of a flowering plant and how each part varies across plant species. These variations help in identification and classification.
1. The Root
- Types: Tap root (dicots) and fibrous root (monocots)
- Regions: Root cap, meristematic zone, elongation zone, maturation zone
- Modifications: Storage roots (carrot), breathing roots (mangrove), prop roots (banyan)
2. The Stem
- Functions: Support, conduction of water and food
- Modifications: Underground stems (ginger, potato), tendrils (grapevine), thorns (citrus)
3. The Leaf
- Parts: Leaf base, petiole, lamina
- Types: Simple and compound leaves
- Venation: Reticulate (dicots), parallel (monocots)
- Modifications: Tendrils (peas), spines (cactus), storage leaves (onion)
4. The Inflorescence
- Racemose: Flowers arranged in acropetal order
- Cymose: Flowers arranged in basipetal order
5. The Flower
- Parts: Sepals, petals, stamens, carpels
- Symmetry: Actinomorphic (mustard), zygomorphic (pea)
- Position of ovary: Hypogynous, perigynous, epigynous
- Aestivation: Valvate, twisted, imbricate
6. Fruit
- Developed from ovary after fertilisation
- Types: True fruit, false fruit (apple)
- Dry and fleshy fruits
7. Seed
- Dicot seed (bean): Two cotyledons
- Monocot seed (maize): One cotyledon
Download PDF
Click here to download NCERT Class 11 Biology Chapter 5: Morphology of Flowering Plants PDF
