Q. No.
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To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
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 |
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Body cavity is the cavity present between body wall and gut wall. In some animals, the body cavity is not lined by mesoderm. Such animals are called
| 1. | Acoelomate | 2. | Pseudocoelomate |
| 3. | Coelomate | 4. | Haemocoelomate |
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‘Cephalization’ in animals was facilitated by evolution of:
1. Radial symmetry
2. Tissue grade organization
3. Bilateral symmetry
4. True coelom
Identify the correct statement:
1. All pseudocoelomates are protostomes
2. All bilaterally symmetrical animals have a coelom
3. All animals have at least a tissue grade organization
4. All radially symmetrical animals are diploblastic
Animals with bilateral symmetry have all the following except:
1. Anterior and posterior end
2. Right and left half
3. Dorsal and ventral surface
4. Oral and aboral surface
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A cell isolated from a four-cell stage larva can develop into a complete animal in:
1. Snail
2. Earthworm
3. Sea urchin
4. Drosophila
Triploblastic organization, bilateral symmetry but lack of coelom will be seen in:
| 1. | Planaria | 2. | Pheretima |
| 3. | Periplaneta | 4. | Pinctada |
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