Radial symmetry is often exhibited by animals having
| 1. | One opening of alimentary canal |
| 2. | Aquatic mode of living |
| 3. | Benthos/Sedentary nature |
| 4. | Ciliary mode of feeding |
Subtopic: Â Basis of Classification |
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Coelom derived from blastocoel is known as
| 1. | Enterocoelom | 2. | Psuedocoelom |
| 3. | Haemocoelom | 4. | Schizocoel |
Subtopic: Â Basis of Classification |
Level 3: 35%-60%
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Besides Annelida and Arthropoda metamerism is found in
1. Platyhelminthes
2. Mollusca
3. Acanthocephala
4. Chordata
Subtopic: Â Phylum Chordata |
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Coelom is a space between alimentary canal and body wall and is enclosed by
| 1. | Ectoderm and endoderm |
| 2. | Mesoderm and ectoderm |
| 3. | Mesoderm and endoderm |
| 4. | Mesoderm on both sides |
Subtopic: Â Basis of classification |
 52%
Level 3: 35%-60%
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Subtopic: Â Basis of Classification |
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In contrast to annelids, the platyhelminthes show
| 1. | Absence of body cavity |
| 2. | Bilateral symmetry |
| 3. | Radial symmetry |
| 4. | Presence of psuedocoel |
Subtopic: Â Phylum Platyhelminthes |
 83%
Level 1: 80%+
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Metameric segmentation is characteristic of
(1) Mollusca and chordata
(2) Platyhelminthes and arthropoda
(3) Echinodermata and annelida
(4) Annelida and arthropoda
Subtopic: Â Phylum Annelida |Â Phylum Arthropoda |
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Which of the following class of cnidarians lacks a medusa stage
| 1. | Hydrazoa |
| 2. | Cubazoa |
| 3. | Anthozoa |
| 4. | Scyphozoa |
Subtopic: Â Phylum Coelenterata |
Level 4: Below 35%
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What type of digestion is seen in Cnidaria?
| 1. | internal and extracellular |
| 2. | internal and intracellular |
| 3. | external, extracellular and intracellular |
| 4. | internal, extracellular and intracellular |
Subtopic: Â Phylum Coelenterata |
Level 3: 35%-60%
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Subtopic: Â Phylum Porifera |
Level 4: Below 35%
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