Planaria possess a high capacity of:
1. metamorphosis
2. regeneration
3. alternation of generation
4. bioluminescence
| 1. | Cnidaria | 2. | Porifera |
| 3. | Protozoa | 4. | Ctenophora |
The figure shows four animals (a), (b), (c) and (d). Select the correct answer with respect to a common characteristic of two of these animals:
| (a) | (b) | ||
| (c) | (d) |
| 1. | (c) and (d) have a true coelom |
| 2. | (a) and (d) respire mainly through body wall |
| 3. | (b) and (c) show radial symmetry |
| 4. | (a) and (b) have cnidoblasts for self-defence |
Which one of the following kinds of animals are triploblastic?
1. Flatworms
2. Sponges
3. Ctenophores
4. Corals
One example of animals having a single opening to the outside that serves both as mouth as well as the anus is:
1. Octopus
2. Asterias
3. Ascidia
4. Fasciola
Biradial symmetry and lack of cnidoblasts are the characteristics of:
1. Starfish and sea anemone
2. Ctenoplana and Beroe
3. Aurelia and Paramecium
4. Hydra and starfish