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Q. No.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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Match the following group of organisms with their respective distinctive characteristics and select the correct option :
| Organisms | Characteristics | ||
| (a) | Platyhelminthes | (i) | Cylindrical body with no segmentation |
| (b) | Echinoderms | (ii) | Warm blooded animals with direct development |
| (c) | Hemichordates | (iii) | Bilateral symmetry with incomplete digestive system |
| (d) | Aves | (iv) | Radial symmetry with indirect development |
| (a) | (b) | (c) | (d) | |
| 1. | (iii) | (iv) | (i) | (ii) |
| 2. | (ii) | (iii) | (iv) | (i) |
| 3. | (iv) | (i) | (ii) | (iii) |
| 4. | (i) | (ii) | (iii) | (iv) |
Identify the incorrect statement regarding echinoderms:
1. Echinoderms evolved from animals with bilateral symmetry.
2. Echinoderms have a mesodermal skeleton composed of calcareous plates or ossicles.
3. Most echinoderms are not able to reproduce asexually and regenerate tissues, organs, and limbs.
4. Echinoderms are also the largest phylum that has no freshwater or terrestrial (land-based) representatives.
The second largest group of dueterostomes are:
| 1. | Echinoderms | 2. | Hemichordates |
| 3. | Chordates | 4. | Arthropods |
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Q. No.
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