NCERT Solutions for Class 11 Biology Chapter 4 - Animal Kingdom


NCERT Solutions for Class 11 Biology Chapter 4 - Animal Kingdom: This chapter will explain very well about the Animal Kingdom. When you look around, you will observe different animals with different structures and forms. As over a million species of animals have been described till now, the need for classification becomes all the more important. The classification also helps in assigning a systematic position to newly described species.

In Chapter 4 - Animal Kingdom you will study the basic fundamental features such as level of organization, symmetry, cell organization, coelom, segmentation, notochord, etc., have enabled us to broadly classify the animal kingdom. Besides the fundamental features, there are many other distinctive characters which are specific for each phylum or class.

Here are the important topics of Class 11 Biology Chapter 4 - Animal Kingdom has given below:

4.1 Basis of Classification

    4.1.1 Levels of Organisation

    4.1.2 Symmetry

    4.1.3 Diploblastic and Triploblastic Organisation

    4.1.4 Coelom

    4.1.5 Segmentation

    4.1.6 Notochord

4.2 Classification of Animals

    4.2.1 Phylum – Porifera

    4.2.2 Phylum – Coelenterata (Cnidaria)

    4.2.3 Phylum – Ctenophora

    4.2.4 Phylum – Platyhelminthes

    4.2.5 Phylum – Aschelminthes

    4.2.6 Phylum – Annelida

    4.2.7 Phylum – Arthropoda 

    4.2.8 Phylum – Mollusca

    4.2.9 Phylum – Echinodermata

    4.2.10 Phylum – Hemichordata

    4.2.11 Phylum – Chordata Class – Cyclostomata Class – Chondrichthyes Class – Osteichthyes Class – Amphibia Class – Reptilia Class – Aves Class – Mammalia

Chapter - 4 Animal Kingdom of class 11 Biology will also tell about other things which come under the Animal Kingdom. Porifera includes multicellular animals which exhibit a cellular level of organization and have characteristic flagellated choanocytes. The coelenterates have tentacles and bear cnidoblasts.

Annelids are metamerically segmented animals with a true coelom. The arthropods are the most abundant group of animals characterized by the presence of jointed appendages. The molluscs have a soft body surrounded by an external calcareous shell.

Phylum Chordata includes animals which possess a notochord either throughout or during early embryonic life. Other common features observed in the chordates are the dorsal, hollow nerve cord and paired pharyngeal gill slits.

After going through NCERT Class 11 Biology Chapter 4 - Animal Kingdom you must be able to answer the following questions:

  • Q1. What are the difficulties that you would face in the classification of animals if common fundamental features are not taken into account?
  • Q2. If you are given a specimen, what are the steps that you would follow to classify it?
  • Q3. How useful is the study of the nature of the body cavity and coelom in the classification of animals?

If you are unable to answer these questions by yourself then, NCERT Solutions for Class 11 Biology Chapter 4 - Animal Kingdom will help you to answer them.

NCERT Solutions for Class 11 Biology Chapter 4 Animal Kingdom- Solved Exercise Questions

Try to solve all the NCERT questions on your own, as NCERT is the base of your knowledge. Solutions for NCERT Class 11 Biology Chapter 4 - Animal Kingdom will not only help you in the preparation of 12th board exam as well as also in other competitive exams like NEET, AIIMs, etc.

NCERT Solutions for class 11 Biology


The Living World


Biological Classification


Plant Kingdom


Morphology of Flowering Plants


Anatomy of Flowering Plants


Structural Organisation in Animals


Cell: The Unit of Life




Cell Cycle and Cell Division


Transport in Plants


Mineral Nutrition


Photosynthesis in Higher Plants


Respiration in Plants


Plant Growth and Development


Digestion and Absorption


Breathing and Exchange of Gases


Body Fluids and Circulation


Excretory Products and their Elimination


Locomotion and Movement


Neural Control and Coordination


Chemical Coordination and Integration

NCERT Solutions for Class 11- Subject wise

NCERT solutions for Class 11 Biology

NCERT solutions for Class 11 Maths

NCERT solutions for Class 11 Chemistry

NCERT solutions for Class 11 Physics


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