- 1(current)
Q. No.Consider the given two statements:
In light of the above statements, choose the most appropriate answer from the options given below:
1. Statement I is correct but Statement II is incorrect.
2. Both Statement I and Statement II are correct.
3. Both Statement I and Statement II are incorrect.
4. Statement I is incorrect but Statement II is correct.
| Statement I: | Sponges exhibit a cellular level of organization. |
| Statement II: | Cnidarians have a tissue level of organization. |
1. Statement I is correct but Statement II is incorrect.
2. Both Statement I and Statement II are correct.
3. Both Statement I and Statement II are incorrect.
4. Statement I is incorrect but Statement II is correct.
Subtopic: Â Phylum Porifera |
 86%
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Sponges are mostly:
| 1. | Asymmetrical | 2. | Radially symmetrical |
| 3. | Bilateraly symmetrical | 4. | Biradially symmetrical |
Subtopic: Â Phylum Porifera |
 92%
From NCERT
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Which of the following is not a feature of Porifera?
1. Exclusively marine animals
2. Presence of a water transport or a canal system
3. Sexes are not separate
4. Internal fertilization and indirect development
Subtopic: Â Phylum Porifera |
 71%
From NCERT
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Subtopic: Â Phylum Porifera |
 90%
From NCERT
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The collared flagellated cell shown in the given figure is called as a:
| 1. | Choanocyte and helps sponges in movement of water through their canal system |
| 2. | Choanocyte and helps sponges in reproducing asexually under favourable conditions |
| 3. | Cnidocyte and helps sponges in catching their prey by paralyzing them |
| 4. | Colloblast and helps sponges in sticking to a surface |
Subtopic: Â Phylum Porifera |
 68%
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Hints
Identify the incorrect statement regarding sponges:
| 1. | Water enters the sponge body through ostia into a spongocoel from where it goes out through the osculum. |
| 2. | Body is supported by a skeleton made up of spicules or spongin fibres. |
| 3. | Sexes are not separate. |
| 4. | Fertilization is external. |
Subtopic: Â Phylum Porifera |
 85%
From NCERT
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- 1(current)
Q. No.
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