- 1(current)
Q. No.Flatworms will exhibit all the following except:
| 1. | Bilateral symmetry | 2. | Three embryonic layers |
| 3. | Incomplete digestive system | 4. | Coelom |
Subtopic: Â Phylum Ctenophora |
 70%
From NCERT
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The phylum with exclusively marine animals is:
| 1. | Porifera | 2. | Cnidaria |
| 3. | Ctenophora | 4. | Platyhelminthes |
Subtopic: Â Phylum Ctenophora |
 71%
From NCERT
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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
Subtopic: Â Phylum Ctenophora |
 63%
From NCERT
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In Ctenophora:
The correct statements are:
| 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 |
Subtopic: Â Phylum Ctenophora |
 72%
From NCERT
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Flame cells are excretory structures seen in:
| 1. | Platyhelminthes | 2. | Annelids |
| 3. | Arthropods | 4. | Cnidarians |
Subtopic: Â Phylum Ctenophora |
 90%
From NCERT
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Triploblastic organization, bilateral symmetry but lack of coelom will be seen in:
| 1. | Planaria | 2. | Pheretima |
| 3. | Periplaneta | 4. | Pinctada |
Subtopic: Â Phylum Ctenophora |
 86%
From NCERT
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- 1(current)
Q. No.
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