Classify following organisms based on presence of true coelom. Spongilla, Planaria, Scorpion, Birds, Ascaris, Nereis


#1

Spongilla - No true body cavity.
Planaria - No true body cavity.
Scorpion - Presence of true body cavity.
Birds - Presence of true body cavity.
Ascaris - A sort of body cavity or a pseudocoelom is present. True body cavity absent.
Nereis - Presence of true body cavity.