The canal system is a characteristic feature of:
1. echinoderms
2. helminths
3. coelenterates
4. sponges
Chondrichthyes is characterised by:
| 1. | placoid scale |
| 2. | ventral mouth |
| 3. | ctenoid scale and ventral mouth |
| 4. | placoid scale and ventral mouth |
Secondary body cavity with segmented mesodermal lining is called:
1. haemocoel
2. neurocoele
3. true coelom
4. pseudocoelom
The scientific name of gharial is:
1. Naja bungarus
2. Gaviais gangeticus
3. Hemidactylus flavivridis
4. None of the above
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 |
In which of the following haemocyanin pigment is found?
1. Lower invertebrates
2. Echinodermata
3. Insecta
4. Annelida
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
Match the following and select the correct option.
| 1. | A-3 B-5 C-2 D-1 E-4 |
| 2. | A-3 B-1 C-5 D-2 E-4 |
| 3. | A-1 B-2 C-3 D-4 E-5 |
| 4. | A-2 B-3 C-4 D-1 E-5 |
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