Retrogressive Metamorphosis (Herdmania)
Metamorphosis is a change from the juvenile to adult stage in which larval stage is quite different fromthe adult stage.In retrogressive metamorphosis the larva possesses advanced characters which are lost…
Herdmania (Sea Squirt)
Body is divided into body proper and test.Free end of the body proper has 2 short cylindrical projections called branchial and atrial siphons. Atrial siphon is larger.The aperture to the…