1. | Bilateral symmetry | 2. | Three embryonic layers |
3. | Incomplete digestive system | 4. | Coelom |
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Which of the following is not a feature of Ctenophora?
1. Diploblastic organisms with tissue level of organization
2. Absence of Cnidocytes
3. Presence of internal ciliated comb plates
4. Bio-luminescence well marked in some members
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a: | body bears eight external rows of ciliated comb plates, which help in locomotion. |
b: | reproduction takes place only by asexual means. |
c: | digestion is both extracellular and intracellular. |
d: | sexes are separate. |
1. | a and c only | 2. | b and d only |
3. | a, b and c only | 4. | a, b and d only |
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Flame cells are excretory structures seen in:
1. | Platyhelminthes | 2. | Annelids |
3. | Arthropods | 4. | Cnidarians |
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