- 1(current)
Q. No.Metagenesis refers to?
| 1. | The presence of different morphic forms |
| 2. | Alternation of generation between asexual and sexual phases of an organism |
| 3. | Occurrence of a drastic change in the form during post-embryonic development |
| 4. | Presence of a segmented body and parthenogenic mode of reproduction |
Select the Taxon mentioned that represents both marine and freshwater species:
| 1. | Echinoderms | 2. | Ctenophora |
| 3. | Cephalochordata | 4. | Cnidaria |
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 of the following pairs are correctly matched?
| Animals | Morphological features | |
| A. | Crocodile | 4-chambered heart |
| B. | Sea urchin | Parapodia |
| C. | Obelia | Metagenesis |
| D. | Lemur | Thecodont |
1. A, C, and D
2, B, C, and D
3. Only A and D
4. Only A and B
In which animal nerve cell is present but the brain is absent:
1. Sponge
2. Earthworm
3. Cockroach
4. Hydra
In Hydra, waste material of food digestion and nitrogenous waste material are removed from:
1. Mouth and mouth
2. Body wall and body wall
3. Mouth and body wall
4. Mouth and tentacles
Which of the following animals have scattered cells with cell–tissue grade organization:
1. Sponge
2. Hydra
3. Liver fluke
4. Ascaris
- 1(current)
Q. No.
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