This kingdom includes all animals except the protozoans, which have been transferred to the kingdom Protista.
1. Organization: Organization is the structural differentiation of animal body. It can be divided in to three levels :
2. Body Symmetry: Body symmetry is defined as similarity in arrangement of parts. It is of two types:
3. Germinal layers: Germinal layers are primarily layers that differentiate in embryo to form tissues and organs.It includes outer ectoderm, middle mesoderm and inner endoderm. On the basis of germinal layer, animals are of two types:
4. Coelom (Body Cavity) : Coelom is a mesodermal lined fluid filled cavity that occurs between alimentary canal and body wall. It provides shock proof environment to various body organs. On the basis of presence or absence of coelom, animals are divided in to three types:
Which of the following kingdoms includes only heterotrophic organisms? | |||
Right Option : D | |||
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The mode of nutrition of the kingdom Animalia is ________________ | |||
Right Option : B | |||
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Animals occur in greatest number in _____________ | |||
Right Option : A | |||
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