Animal Kingdom Question 24
24. In contrast to Annelids the Platyhelminths show:
(a) Absence of body cavity
(b) Bilaterial symmetry
(c) Radial symmetry
(d) Presence of pseudocoel
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Answer : a
Hints & Solutions
(a) Platyhelminthes includes flat warms. There is no body cavity. The animals are therefore acoelomates. Annelids also have bilateral symmetry. They are coelomate having a perivisceral cavity divided into compartments
