- 1(current)
Q. No.Parazoa is a taxon at the base of the phylogenetic tree of the animal kingdom and includes the most primitive forms, characterized by not having proper tissues. The phylum/phyla included in this taxon will be:
| I. Porifera | II. Cnidaria | III. Ctenophora |
| 1. | Only I | 2. | Only II and III |
| 3. | Only I and II | 4. | I, II and III |
Subtopic: Â Phylum Porifera |Â Basis of Classification |
 80%
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Identify the incorrectly matched pair:
|
Phylum |
Characteristic |
|
|
1. |
Porifera |
Water vascular system |
|
2. |
Ctenophora |
Bioluminescence |
|
3. |
Molluska |
Radula |
|
4. |
Annelida |
Closed circulatory system |
Subtopic: Â Phylum Porifera |
 76%
From NCERT
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Match the following list of animals with their level of organization.
| Division of Labour | Animal | ||
| A. | Organ level | i. | Pheritima |
| B. | Cellular aggregate level | ii. | Fasciola |
| C. | Tissue level | iii. | Spongilla |
| D. | Organ system level | iv. | Obelia |
Choose the correct match showing division of labour with animal example:
| i | ii | iii | iv | |
| 1. | B | C | D | A |
| 2. | B | D | C | A |
| 3. | D | A | B | C |
| 4. | A | D | C | B |
Subtopic: Â Phylum Porifera |Â Phylum Coelenterata |Â Phylum Ctenophora & Platyhelminthes |Â Phylum Aschelminthes |Â Phylum Annelida |Â Phylum Arthropoda |Â Phylum Mollusca |Â Phylum Echinodermata |Â Phylum Hemichordata |Â General Introduction: Vertebrates & Agnatha |
 87%
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The animals belonging to all the following groups are exclusively marine except:
| 1. | Ctenophora | 2. | Porifera |
| 3. | Protochordata | 4. | Echinodermata |
Subtopic: Â Phylum Porifera |Â Phylum Coelenterata |Â Phylum Ctenophora & Platyhelminthes |Â Comparative study of Cartilagenous & Bony Fishes |
 74%
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- 1(current)
Q. No.
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