Similarity between fish and tadpole is

$A$ shell,as a body covering,is not present in which of the following?

$A$: Annelids and Arthropods exhibit bilateral symmetry.
$R$: In Annelids and Arthropods,the body can be divided into identical halves through any plane passing through the central axis.

How many of the following phyla exhibit diploblastic and tissue-level organization?
Porifera,Coelenterata (Cnidaria),Ctenophora,Platyhelminthes,Aschelminthes

Sea Anemone and Sea Lily belong to which phyla respectively?

How many of the following animals exhibit bilateral symmetry,are triploblastic,and possess a true coelom?
Sepia,Loligo,Sea anemone,Balanoglossus,Dentalium,Sea lily,Chiton,Pearl oyster,Starfish