Different types of excretory structures and animals are given below. Match them appropriately and mark the correct answer from among those given below
| Excretory Structure/Organ | Animals | ||
| A. | Protonephridia | 1. | Prawn |
| B. | Nephridia | 2. | Cockroach |
| C. | Malpighain tubules | 3. | Earthworm |
| D. | Green gland or antennal gland | 4. | Flatworms |
Codes
| A | B | C | D | |
| 1. | 4 | 3 | 2 | 1 |
| 2. | 2 | 3 | 1 | 2 |
| 3. | 4 | 3 | 1 | 2 |
| 4. | 2 | 3 | 2 | 4 |
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