Match column I with column II and select the correct option using the codes given below.
Column I | Column II | ||
a | Protonephridia | 1 | Insects |
b | Malpighian tubules | 2 | Crustaceans |
c | Nephridia | 3 | Annelids |
d | Antennary glands | 4 | Flatworms |
Protonephridia | Flatworms |
Malpighian tubules | Insects |
Nephridia | Annelids |
Antennary glands | Crustaceans |