CBSE/NCERT/Exercises/Class_11_Biology
Created by Titas Mallick
Biology Teacher • M.Sc. Botany • B.Ed. • CTET (CBSE) • CISCE Examiner
BioNotesBioNotesCreated by Titas Mallick
Biology Teacher • M.Sc. Botany • B.Ed. • CTET (CBSE) • CISCE Examiner
Online
Exercises and Questions for NCERT Class 11 Biology Chapter 5
Subject: Biology
Chapter: 5 - Morphology of Flowering Plants
1. How is a pinnately compound leaf different from a palmately compound leaf?
2. Explain with suitable examples the different types of phyllotaxy.
3. Define the following terms: (a) Aestivation: The mode of arrangement of sepals or petals in a floral bud with respect to other members of the same whorl. (b) Placentation: The arrangement of ovules within the ovary. (c) Actinomorphic: A flower that can be divided into two equal radial halves in any radial plane passing through the centre (radial symmetry, e.g., Mustard). (d) Zygomorphic: A flower that can be divided into two similar halves only in one particular vertical plane (bilateral symmetry, e.g., Pea). (e) Superior Ovary: In a hypogynous flower, the gynoecium occupies the highest position while other parts are situated below it. (f) Perigynous Flower: A flower where the gynoecium is situated in the centre and other parts are located on the rim of the thalamus at the same level. (g) Epipetalous Stamen: When stamens are attached to the petals (e.g., Brinjal).
4. Differentiate between: (a) Racemose and Cymose Inflorescence:
5. Draw the labelled diagram of the following: (Note: Visual diagrams are typically included in textbooks. Below are the key parts to be labelled) (i) Gram Seed: Seed coat, hilum, micropyle, two cotyledons, plumule, radicle. (ii) V.S. of Maize Seed: Seed coat fused with fruit wall, endosperm, aleurone layer, scutellum (cotyledon), coleoptile, plumule, radicle, coleorhiza.
6. Take one flower of the family Solanaceae and write its semi-technical description. Also draw their floral diagram. Answer (e.g., Solanum nigrum):
7. Describe the various types of placentations found in flowering plants.
8. What is a flower? Describe the parts of a typical angiosperm flower.
9. Define the term inflorescence. Explain the basis for the different types inflorescence in flowering plants.
10. Describe the arrangement of floral members in relation to their insertion on thalamus.