Basic Science : Coelenterata Ctenophora QUESTIONS AND ANSWERS :: part2 : 16 to 20
Following Basic Science multiple choice objective type questions and answers will help you in many types of 2024 job and other entrance examinations :
16.Hydra contracts its body by means of |
| Interstitial cells |
| Cnidoblasts |
| Nutritive cells |
| Epithelio-muscular cells |
17.Cnidom is a |
| Battery of a nematoblasts |
| Group of nematoblasts |
| Armed thread |
| Unarmed thread |
18.A colonial hydrozoan is |
| Hydra |
| Metridium |
| Aurelia |
| Obelia |
19.Larva of Hydra is |
| Absent |
| Planula |
| Tadpole |
| Hydrula |
20.Hermit Crab develops a beneficial association with |
| Adamsia |
| Aurelia |
| Gorgonia |
| Pennatula |
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