Structural organization in plants and animals

NCERT solutions for Class 11 Biology 

NCERT Class 11 Biology Chapter wise Solutions

UNIT I:  DIVERSITY IN THE LIVING WORLD

• 1 : The Living World
• 2 : Biological Classification
• 3 : Plant Kingdom
• 4 : Animal Kingdom

UNIT II: STRUCTURAL ORGANISATION IN PLANTS AND ANIMALS

• 5 : Morphology of Flowering Plants
• 6 : Anatomy of Flowering Plants
• 7 : Structural Organisation in Animals

UNIT III: CELL: STRUCTURE AND FUNCTIONS

• 8 : Cell : The Unit of Life
• 9 : Biomolecules
• 10 : Cell Cycle and Cell Division

UNIT IV: PLANT PHYSIOLOGY

• 11 : Transport in Plants
• 12 : Mineral Nutrition
• 13 : Photosynthesis in Higher Plants
• 14 : Respiration in Plants
• 15 : Plant Growth and Development

UNIT V: HUMAN PHYSIOLOGY

• 16 : Digestion and Absorption
• 17 : Breathing and Exchange of Gases
• 18 : Body Fluids and Circulation
• 19 : Excretory Products and their Elimination
• 20 : Locomotion and Movement
• 21 : Neural Control and Coordination
• 22 : Chemical Coordination and Integration

NCERT Solutions For Class 11 Biology Structural organization in plants and animals

Structural organization in plants and animals 1. What is meant by modification of root? What type of modification of root is found in the
(a) Banyan tree
(b) Turnip
(c) Mangrove trees

2. Justify the following statements on the basis of external features
(i) Underground parts of a plant are not always roots
(ii) Flower is a modified shoot

3. How is pinnately compound leaf different from palmately compound leaf?

4. Explain with suitable examples the different types of phyllotaxy?

5. Define the following terms:
(a) Aestivation
(b) Placentation
(c) Actinomorphic
(d) Zygomorphic
(e) Superior ovary
(f) Perigynous flower
(g) Epipetalous Stamen

6. Differentiate between
(a) Racemose and cymose inflorescence
(b) Fibrous roots and adventitious roots
(c) Apocarpous and syncarpous ovary

7. Draw the labelled diagram of the following:
(i) Gram seed
(ii) V.S. of maize seed

8. Describe modifications of stem with suitable examples

9. Take one flower each of families Fabaceae and Solanaceae and write its semi-technical description. Also draw their floral diagrams after studying them.

10. Describe the various types of placentations found in flowering plants.

11. What is a flower? Describe the parts of a typical angiosperm flower?

12. How do the various leaf modifications help plants?

13. Define the term inflorescence. Explain the basis for the different types of inflorescence in flowering plants.

14. Write the floral formula of an actinomorphic bisexual, hypogynous flower with five united sepals, five free petals. Five free stamens and two united carpals with superior ovary and axile placentation.

15. Describe the arrangement of floral members in relation to their insertion on thalamus?

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