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 |
Consider following features:
| A. | Organ system level of organisation |
| B. | Bilateral symmetry |
| C. | True coelomates with segmentation of body |
Select the correct option of animal groups which possess all the above characteristics.
| 1. | Annelida, Mollusca and Chordata |
| 2. | Annelida, Arthropoda and Chordata |
| 3. | Annelida, Arthropoda and Mollusca |
| 4. | Arthropoda, Mollusca and Chordata |
Which one of the following pairs of items correctly belong to the category of organs mentioned against it?
| 1. | Nephridia of earthworm and malpighian tubules of cockroach - excretory organs. |
| 2. | Wings of honey bee and wings of crow - homologous organs |
| 3. | Thorns of Bougainvilea and tendrils of Cucurbita - analogous organs |
| 4. | Nictitating membrane and blind spot in human eye - vestigial organs |