Chapter 04 of Biology ncert book titled - Animal kingdom for class 11
Read Chapters: The living world, Biological classification, Plant kingdom, Animal kingdom, Morphology of flowering plants, Anatomy of flowering plants, Structural organisation in animals, Cell: the unit of life, Biomolecules, Cell cycle and cell division, Transport in plant, Mineral nutrition, Photosynthesis in higher plants, Respiration in plants, Plant growth and development, Digestion and ...
Textbook answers of class 11 chapter 4, 4. Animal Kingdom - Biology - Exemplar. Multiple Choice Questions, Very Short Answer Type, Short Answer Type, Long Answer Type,
Solutions of chapter 4. Animal Kingdom | Biology - Exemplar - Class 11
A survey of animal kingdom presents a variety of excretory structures. In most of the invertebrates, these structures are simple tubular forms whereas vertebrates have complex tubular organs called kidneys. Some of these structures are mentioned here. Protonephridia or flame cells are the excretory structures in Platyhelminthes (Flatworms, e.g., Planaria), rotifers, some annelids and the ...
In the preceding chapters you came across a large variety of organisms, both unicellular and multicellular, of the animal kingdom. In unicellular organisms, all functions like digestion, respiration and reproduction are performed by a single cell. In the complex body of multicellular animals the same basic functions are carried out by different groups of cells in a well organised manner. The ...
Taxonomical studies of all known organisms have led to the development of common categories such as kingdom, phylum or division (for plants), class, order, family, genus and species. All organisms, including those in the plant and animal kingdoms have species as the lowest category.