You will learn about animal kingdom and basic classification in this topic.

Animal kingdom brings about the basic features of multicellular animals.

Bases of classification are arrangement of cells, body symmetry, nature of coelom, patterns of digestive, circulatory and reproductive system. 

It includes:

Level of Organization: Cellular level, Tissue level, Organ level, organ system level.

Body Plan: cell aggregate type, blind sac type and tube within tube type. 

Symmetry: Asymmetric,  bilateral and radial type.

Germ layers: ectoderm, mesoderm and endoderm. 

Coelom(body cavity): acoelomate, pseudocoelomate ans eucoelomate. 

Segmentation: segmented (metamerism) and nonsegmented. 

Notochord: chordates and nonchordates. 

Type of circulation: open and closed type.

Type of nutrition: holozoic,  parasitic and saprozoic 

Type of reproduction: asexual and sexual 

Type of fertilization: external and internal

Type of development: direct or indirect (includes larval stage).

Oviparous or viviparous animals 

Phylum includes: Porifera,  Cnidaria,  Ctenophora, Platyhelminthies, Aschelminthies, Annelida, Arthropod, Mollusca, Echinodermata, Hemichordata and Chordata. 

Habitats as aquatic or terrestrial.