Cliquer sur «Telecharger» ci-contre et le téléchargement débutera !
as the basis of animal classification and some of them are discussed here. 4.1.1 Levels of Organisation . directly bathed in it and. (ii) closed type in . Kingdom. Levels of. Organisation. Symmetry. Body Cavity or Coelom. Phylum. Cellular level. All animals have a notochord either throughout life or during . Sexes are separate; fertilisation is external and development is direct. e.g.,. Classification of Animal Kingdom - Porifera, Coelenterata, Platyhelminthes, . type in which the blood is pumped out of the heart and the cells and tissues are directly bathed in it . Get our PDF Notes OR You can Contribute. Direct or indirect development. 2. Protostomic development as the first opening to develop in embryonic digestive tube is mouth and anus develops later . Animal Kingdom Classification System Class 11 Notes Download in PDF. . Chapter 4 Animal Kingdom . Fertilisation internal, development direct or indirect. IUHSS Parappur, Malappuram ZLGY-MM: XI 4 ANIMAL KINGDOM . . in plants * Have muscular * Females are longer than males * Development is direct or 3. Chordates – Animals with notochord in any stage of life. e.g., Fishes . Some of them absorb nutrients from the host directly through their body surface. Excretory cells . PRINTABLE PDF FILE IS GIVEN IN LINK BELOW –. Which is the largest phylum in the animal kingdom ? 75. Two thirds of known . Circulation in which blood is in direct contact with cells and tissues example. About 1.2 million species of animals are described till now. The classification helps to assign a systematic position to newly described species. 4.1 BASIS OF .