Question
Biology Question on Kingdom Animalia
In contrast to annelids the Platyhelminthes show
A
Absence of body cavity
B
Bilateral symmetry
C
Radial symmetry
D
Presence of pseudocoel
Answer
Absence of body cavity
Explanation
Solution
Platyhelminthes do not have body cavity so they are acoelomates. In annelids, the body cavity is true and schizocoelous. Both annelids and platyhelminthes have bilateral symmertry.