Give examples for the following

(a) Bilateral, dorsiventral symmetry is found in __________.


(b) Worms causing disease elephantiasis is__________.


(c) Open circulatory system is found in__________ where coelomic cavity is filled with blood.


(d) __________ are known to have pseudocoelom.


(a) Bilateral, dorsiventral symmetry is found in Platyhelmihthes-liver flukes


(b) Worms causing disease elephantiasis is Wuchereria (Filaria worm )


(c) Open circulatory system is found in Arthropods where coelomic cavity is filled with blood.


(d) Nematodes are known to have pseudocoelom


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