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Animal charcoal (or Bone charcoal) is obtained by destructive distillation of bones. It contains about 10-12% of amorphous carbo..

All animals are heterotrophic (there are exceptions like Euglena, which has chlorophyll..

Among the members of the animal kingdom, about 95% do not posses a backbone (or vertebral column) and hence are described as invertebrates. The remaining animals represent a group called chordates, which posses a solid supporting structure on the dorsal side of the body called n..

Materials formed in one part of the body have to be taken up to other parts where they are needed or to be got rid of. This is an essential requirement of most animals. This function is performed by the body fluid..

All animals are heterotrophic (there are exceptions like Euglena, which has chlorophyll). The different modes of heterotrophic nutrition have already been dealt with in the earlier part of the chapter. Of all the methods of heterotrophism, holozoic is the most commonly foun..

Introduction - A tissue is a group of cells having a common origin, similar structure and performing a common function. Tissues are characteristic of advanced multicellular animals, commonly called as eumetazoans. They are true multicellular animals where the body cells aggregat..

All animals are heterotrophic (there are exceptions like Euglena, which has chlorophyll). The different modes of heterotrophic nutrition have already been dealt with in the earlier part of the chapter. Of all the methods of heterotrophism, holozoic is the most commonly foun..

Introduction - Materials formed in one part of the body have to be taken up to other parts where they are needed or to be got rid of. This is an essential requirement of most animals. This function is performed by the body fluid..

Bone Charcoal It is prepared by the destructive distillation of bones of animals. Bones obtained from slaughter houses, are first treated with certain bacteria to remove all the fleshy remnants. Then the bones are taken in a furnace and heated strongly in the absence of air. The s..

The following is a list of the approximate number of species known in the animal groups regarded as major phyla. Protozoa 35,000 Porifera 9,000 Coelenterates 9,000 Platyhelminthes 20,000 Aschelminthes 12,000 Annelids 15,000 Arthropods 9,60,000 Molluscs 50,000 Echinodermata 7,000 Chordates..