SCIENCE
ZOOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Acoelomate
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Diploblast
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Psuedocoelomate
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Unicellular
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Detailed explanation-1: -Animals of the Platyhelminthes type are bilaterally symmetrical, triploblastic, and acoelomate (without a body cavity).
Detailed explanation-2: -Platyhelminthes are triploblastic and acoelomate, i.e. absence of body cavity. The spaces between various organs are filled with special mesodermal tissue, the mesenchyme.
Detailed explanation-3: -Acoelomates are triploblastic animals lacking a fluid-filled body cavity (Fig. 3.17 A). The flatworms (phylum Platyhelminthes) and ribbon worms (phylum Nemertea) are examples of acoelomates.
Detailed explanation-4: -No, all triploblastic animals do not have a true coelom. These animals are called acoelomates.
Detailed explanation-5: -Among the acoelomate phyla, the members of Platyhelminthes (flatworms) have no body cavity, and the space between the gut and the body wall, when present, is filled with a spongy organ tissue of mesodermal cells through which tissue fluids may percolate.