Q. The cnidoblasts used during looping movement of Hydra are:

 1522  202 EAMCETEAMCET 2000 Report Error

Solution:

In looping movement the body first extends and then bends over. Due to this tentacles attach to the substratum with the help of adhesive glutinant nematocysts. This movement is similar to the looping movement of a caterpillar or leech.