The canal system is a characteristic feature of:
1. echinoderms
2. helminths
3. coelenterates
4. sponges
Subtopic: Phylum Porifera |
89%
Level 1: 80%+
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Subtopic: Phylum Porifera |
78%
Level 2: 60%+
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Subtopic: Phylum Chordata |
77%
Level 2: 60%+
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Chondrichthyes is characterised by:
| 1. | placoid scale |
| 2. | ventral mouth |
| 3. | ctenoid scale and ventral mouth |
| 4. | placoid scale and ventral mouth |
Subtopic: Super Class Pisces & its General Characteristics |
75%
Level 2: 60%+
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Subtopic: Phylum Mollusca |
68%
Level 2: 60%+
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The scientific name of gharial is:
| 1. | Naja bungarus |
| 2. | Gaviais gangeticus |
| 3. | Hemidactylus flavivridis |
| 4. | None of the above |
Subtopic: Study of Reptilia |
67%
Level 2: 60%+
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Which of the given option is correct regarding the statements?
| Statement I: | Cephalochordata bears notochord all along the body throughout life. |
| Statements II: | Urochordate bears vertebral column only in tail region throughout the life. |
| 1. | I wrong, II correct |
| 2. | I correct, II wrong |
| 3. | Both I and II are wrong |
| 4. | Both are correct |
Subtopic: Phylum Chordata |
67%
Level 2: 60%+
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Secondary body cavity with segmented mesodermal lining is called:
| 1. | haemocoel | 2. | neurocoele |
| 3. | true coelom | 4. | pseudocoelom |
Subtopic: Basis of Classification |
58%
Level 3: 35%-60%
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Which of the following cells in earthworms play a role similar to the liver in vertebrates?
1. Amoebocytes
2. Mucocytes
3. Chloragogen cells
4. epidermal cells
Subtopic: Phylum Annelida |
Level 3: 35%-60%
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In which of the following haemocyanin pigment is found?
1. Lower invertebrates
2. Echinodermata
3. Insecta
4. Annelida
Subtopic: Phylum Annelida |
Level 4: Below 35%
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