The symmetry found in the phylum $Cnidaria$ is:

In which animals is metagenesis observed?

To which phylum is the jellyfish classified?

The most appropriate term to designate the life cycle of $Obelia$ is

Obelia is characterised by:
$A$. Ciliated free-swimming planula larva
$B$. Metagenesis
$C$. Acraspedote medusa
$D$. Statocysts present in medusoid stage

Which one of the following animals is a coelenterate?