Q. No.Canal system in sponges helps in
| 1. | Food gathering |
| 2. | Respiratory exchange |
| 3. | Removal of waste |
| 4. | All of the above |
Subtopic: Phylum Porifera |
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What is the name of the specialized cells in sponges that maintain the flow of water through the canals?
1. Cnidocytes
2. Choanocytes
3. Nephrocytes
4. Chromatophores
1. Cnidocytes
2. Choanocytes
3. Nephrocytes
4. Chromatophores
Subtopic: Phylum Porifera |
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Level 1: 80%+
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Find the incorrect match
| 1. | Sycon-Scypha |
| 2. | Spongilla-Fresh water sponge |
| 3. | Euspongia- Bath sponge |
| 4. | Sycon- Bath sponge |
Subtopic: Phylum Porifera |
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Level 1: 80%+
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Subtopic: Phylum Porifera |
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Level 1: 80%+
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Which of the following animals possess a canal system for water circulation?
1. Sycon, Spongilla, Euspongia
2. Hydra, Adamsia, Aurelia
3. Taenia, Fasciola, Ascaris
4. Pheretima, Hirudinaria, Nereis
1. Sycon, Spongilla, Euspongia
2. Hydra, Adamsia, Aurelia
3. Taenia, Fasciola, Ascaris
4. Pheretima, Hirudinaria, Nereis
Subtopic: Phylum Porifera |
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In which of the following pairs of animals, digestion is intracellular and water is taken through pores in the body?
1. Euspongia and Spongilla
2. Hydra and Physalia
3. Herdmania and Balanoglossus
4. Pleurobrachia and Scypha
Subtopic: Phylum Porifera |
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In case of poriferans, the spongocoel is lined with flagellated cells called:
1. oscula
2. choanocytes
3. mesenchymal cells
4. ostia
Subtopic: Phylum Porifera |
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The pathway of water transport responsible for food gathering, respiratory exchange and removal of wastes is found in phylum
| 1. | Porifera | 2. | Platyhelminthes |
| 3. | Aschelminthes | 4. | Annelida |
Subtopic: Phylum Porifera |
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Find the incorrect match with respect to sponges:
| 1. | OstiaWater enters through it |
| 2. | OsculumWater goes out through it |
| 3. | ChoanocytesThe collar cells are absent |
| 4. | SpongocoelCentral cavity |
Subtopic: Phylum Porifera |
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The central cavity of the sponges is known as
| 1. | spongocoel | 2. | Ostia |
| 3. | Osculum | 4. | Gastro-vascular cavity |
Subtopic: Phylum Porifera |
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Level 1: 80%+
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