Which of the following cell is present on the tentacles and body of the Cnidarians
1.Nematocysts
2.Choanocytes
3.Cnidocytes
4.Both 2 and 3
Stinging capsule present in Cnidarians is called
1.Nematocysts
2.Choanocytes
3.Cnidocytes
4.Both 2 and 3
Cnidocytes are used for
| 1. | Anchorage |
| 2. | Defence |
| 3. | Capturing of prey |
| 4. | All of these |
Which of the following is not true about Cnidarians
| 1. | Radial symmetry |
| 2. | Diploblastic |
| 3. | Tissue level of organisation |
| 4. | Deutrostomes |
The distinctive feature of Cnidarians is
1.Cnidoblast
2.Polyp and Medusa form
3.Gastro-vascular cavity
4.Hypostome
In Cnidarians the digestion is
| 1. | Intracellular | 2. | Extracellular |
| 3. | Intercellular | 4. | Both 1 and 2 |
Which of the following is true about Gastro-vascular cavity of Cnidarians?
| 1. | It contains single opening |
| 2. | Mouth on hypostome |
| 3. | Anus on hypostome |
| 4. | Both 1 and 2 |
The sessile and cylindrical form of Cnidarians is called as
1.Medusa
2.Polyp
3.Both 1 and 2
4.Neither medusa nor Polyp
The umbrella shaped and free-swimming form of Cindarians is not present in
1.Aurelia
2.Jellyfish
3.Adamsia
4.Both 1 and 2
Metagenesis is not present in
1.Obelia
2.Adamsia
3.Pennatula
4.Both 2 and 3