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Diversity In Living Organisms
List the features of Phylum Platyhelminthes (Flatworms) of the Animal Kingdom?
Phylum Platyhelminthes (Flatworms)
Main Features:
(i) Their body is dorsoventrally flat and leaf-like or ribbon like.
(ii) Body symmetry is bilateral that is left and right half have the same design.
(iii) They are mostly hermaphrodite.
(iv) Body cavity or true coelom is absent.
(v) There are three layers of cells from which differentiated tissues can be formed. So, animals are triploblastic.
(vi) They are either free living or parasitic.
Examples. Planaria, Fasciola (liver fluke) and Taenia solium (tape worm) are parasitic.
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What are the advantages of classifying organisms?
How would you choose between two characteristics to be used for developing a hierarchy in classification?
Explain the basis for grouping organisms into five kingdoms.
What are the major divisions in the plantae? What is the basis for these divisions?
How are the criteria for deciding divisions in plants different from the criteria for deciding the subgroups among animals?
Explain how animals in vertebrata are classified into further subgroups.
Name the biggest animal and the tallest tree.
What is classification?
Name the branch of science which deals with classification.
Why do we classify organisms?
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