CLASSIFICATION
NINE COMMON ANIMAL PHYLA
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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False body cavity
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No pores
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Radial Symmetry
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Complex organ system
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Detailed explanation-1: -Nematodes are round with a body cavity. They have one way guts with a mouth at one end and an anus at the other. They have a pseudocoelom that is lined on one side with mesoderm and on the other side with endoderm.
Detailed explanation-2: -General Characteristics of Nemathelminthes These are triploblastic, bilaterally symmetrical animals with organs system level of body organization. Body is elongated, cylindrical, unsegmented and vermiform. Size of the nematodes varies considerably in different species.
Detailed explanation-3: -Although nematodes do have a space in the body between the digestive tract and the body wall, it is not lined with tissue and is not considered to be a true coelom. Thus, nematodes are sometimes referred to as pseudocoelomates (Fig. 3.17 C).