A. Characteristics of Kingdom Animalia
Members kingdom animalia have characteristics that distinguish it from the other kingdom-the kingdom, such as:
-Hewan A multicellular eukaryotic organisms.
-Bersifat Heterotrophic, in contrast to plants that can produce their own food through photosynthesis (autotrophs), animals can not produce their own food so that will eat the organic material that is so.
-Not Have cell walls, the largest component of animal cells composed of the structural protein collagen.
-Have Nerve tissue and muscle tissue so that it can actively moving (motile).
-Most Reproduce sexually.
-cycle Life is dominated by the form diploid (2n).
B. Body Structure Animalia
In the kingdom animalia classification, there are at least two characteristics that distinguish the structure of the body of an animal. The two characteristics, among others based on the symmetry of the body and the body layer.
1. Symmetry body
Based on the symmetry of the body, the animal can be divided into animals that have bilateral symmetry of the body and the body of an animal which has a radial symmetry.
Bilateral symmetry, is an animal whose organs are arranged adjacent to the other parts. If taken to cut the line from front to back, it will show the body parts of the same body between the left and right. Animals are symmetrical bilateral besides having the peak (oral) and the base (aboral), also has a top side (dorsal) and the underside (ventral), the head (anterior) and the tail (posterior), and side (lateral) ,
Radial symmetry, is an animal that has a layer of body circular (round). Animals with radial symmetry have only two parts, namely the peak (oral) and bottom (aboral). Radially symmetrical animals referred to as radiata, animals are included in this group include sponges, cnidarians and echinoderms.
radial symmetry, bilateral
2. Layer Body
In its development into mature individuals, animals will form the body layer. Based on the number of layers of the body, Hawan grouped into diploblastik and tripoblastik.
Diploblastik animal, an animal that has two layers of cells. The outermost layer is called the ectoderm, while the inner layer is called the endoderma. Examples of animal diploblastik are cnidarians.
Animal triploblastik, is an animal which has three layers of cells. The outermost layer is called eksoderma, the middle layer is called mesoderma, and the inner layer is called endoderma. Ectoderm will develop into the epidermis and the nervous system, mesoderma will develop into the digestive gland and intestine, while endoderma will develop into muscle tissue.
3. The body cavity (coelomic)
Animals triploblastik still can be classified again by the body cavity (coelomic) has. On the animal's own body cavity can be divided into three types, namely aselomata, pseudoselomata, and selomata.
Aselomata, is a solid bodied animals that do not have a cavity between the gut with the outer body. Animals including aselomata is flatworm (Platyhelmintes).
Pseudoselomata, is an animal that has a cavity in the body cavity (pseudoselom). The fluid-filled cavity that separates the digestive organs and outer body wall. The cavity is not limited tissue derived from mesoderma. Animals including pseudoselomata is Rotifera and nematodes.
Selomata, is an animal that contains the hollow body fluids and have a limit derived from mesoderma network. Inner and outer layers of tissue surrounding the cavity of these animals and connect dorsal to ventral forming mesenteron. Mesenteron serves as a hanger organs. Selomata itself is divided into two types, namely protoselomata and deutroselomata. Examples of animals including protoselomata among other molluscs, annelids and arthropods. While animals are included in deutroselomata among others Echinodermata and Chordata.
C. Classification Kingdom Animalia
Animalia kingdom members are classified into nine phyla, among others:
1. Sponge (animal porous).
2. Cnidaria (hollow animals).
3. Platyhelmintes (flatworms).
4. Nemathelmintes (roundworm).
5. annelids (segmented worms).
6. molluscs (soft-bodied animals).
7. Arthropods (segmented animals).
8. Echinodhermata (animals skinned thorns).
9. Chordata (animals with).
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