Question

write a brief note on embryonic development of scycon​

Answer 1

The fertilized egg or zygote divides re­peatedly to form a round mass of cells. It is mostly covered with homogeneous cells but at one end a few thickly granulated cells appear.

The homogeneous cells grow flagella and completely enclose the granu­lated cells. Soon the cells at one half lose their flagella and become large and granular. The hollow and swimming larva at this stage is called amphiblastula stage and the larva in this stage leaves the parent body.