Match the structures with their functions in Cnidaria:
| List I | List II |
|---|
A. Cnidoblast --- I. Used for anchorage, defence and for the capture of prey
B. Polyps --- IV. Produce Medusae asexually
C. Medusae --- II. Used to form the polyps sexually
D. Hypostome --- III. Single opening for gastrovascular cavity | I. Used for anchorage, defence and for the capture of prey
IV. Produce Medusae asexually
II. Used to form the polyps sexually
III. Single opening for gastrovascular cavity |