animal organisation

Animal Organisation - Animals exhibit a complex body organisation which shows a very clear evolutionary trend. The complexity of animal organisation is seen with reference to features like cellularity, germ layers in the body wall, symmetr..

Animals exhibit a complex body organisation which shows a very clear evolutionary trend. The complexity of animal organisation is seen with reference to features like cellularity, germ layers in the body wall, symmetry of the body parts and the nature o..

The Animal Kingdom is divided in several phyla mainly on the basis of the cell organisation, symmetry, presence or absence of notochord and body cavit..

Animal Classification - The animal kingdom is classified into distinct groups based on the body organisation discussed above. The following scheme provides an outline classification of the animal kingdom into the ten major phyla: fig. 10.3 -Phylogenetic Tree ..

Introduction - Animals can be broadly distinguished into two major groups the nonchordates (or invertebrates) and the chordates.Invertebrates account for more than 95% of the animal species that have been identified. These are animals which do not have a vertebral colu..

(milch) animals like cows, buffaloes and goats. Eggs are obtained from egg laying birds like fowl and duck. Meat is obtained from fowl, cow, sheep, goat and pig. Fish are either fresh water or marine and include crabs, shrimps and prawns. To meet the ever-increasing demand of food to feed..

: In this group cells do not form tissues. Hence, animals have remained at the acellular grade or organisation. For example, Sponges..

Primitive multicellular animals with cellular grade of organisation. Free living aquatic, mostly marine, sedentary forms either solitary or colonia..

Radially symmetrical, diploblastic multicellular animals with a tissue grade of organisation. Aquatic, freshwater or marine solitary or colonial forms which may be free swimming or sedentar..

The Animal Kingdom is divided in several phyla mainly on the basis of the cell organisation, symmetry, presence or absence of notochord and body cavity. Animals are arranged progressively from simple single-celled protozoans to highly complex mammals. Given below are ..