Ambulacral grooves are absent in the living forms of the class

Ambulacral grroves are absent in

Ambulacral grroves are absent in

Ambulacral grooves are absent in the class

Deltoid groove is present in

Consider the following characters: (a) Aboral surface bears anus and madreporite. (b) Ambulacral grooves are absent. (c) Respiration by dermal branchiae and tube feet.(d) Arms are branched.(e) Pedicellariae are present Which of the following options gives the correct description of Asterias?

Name the grooves present in dinoflagellates.

Name the grooves present in dinoflagellates.

Tranverse groove present in dinoflagellates is