1. | Asterias | 2. | Pheretima |
3. | Rotifers | 4. | Pinctada |
I: | Skin is moist and without scales. |
II: | Eyes have eyelids. |
III: | A tympanum represents the ear. |
IV: | Respiration is by gills, lungs and through skin. |
I | II | III | IV | |
1. | T | T | F | F |
2. | F | F | F | T |
3. | T | F | T | T |
4. | T | T | T | T |
Statement I: | Chondrichthyes lack the capacity to regulate their body temperature. |
Statement II: | Osteichthyes have the capacity to regulate their body temperature. |
A | |
B |
1. | A is Medusa and is free-swimming; B is Polyp and is sessile |
2. | A is Polyp and is free-swimming; B is Medusa and is sessile |
3. | A is Medusa and is sessile; B is Polyp and is free-swimming |
4. | A is Medusa and is free-swimming; B is Polyp and is free-swimming |
I: | Sponges |
II: | Echinoderms |
III: | Hemichordates |
IV: | Comb jellies |
V: | Flatworms |
I: | do not belong to the same class but belong to the same super-class. |
II: | are placed under the same division in sub-phylum vertebrata. |
1. | A and B are correct | 2. | A and C are correct |
3. | A and D are correct | 4. | B and C are correct |
I: | lacks a coelom |
II: | is triploblastic |
III: | is expected to have bilateral symmetry |
IV: | is expected to be dorso-ventrally flattened |
I: | having radial symmetry in adults and larvae |
II: | having three germ layers |
III: | lacking a coelom |
I: | The body is segmented metamerically. |
II: | The symmetry is bilateral and they have a true coelom |