| Column-I (Classes) | Column-II (Examples) | ||
| A. | Polychaeta | p. | Scorpion |
| B. | Trematoda | q. | Pila |
| C. | Arachnida | r. | liver fluke |
| D. | Gastropoda | s. | Nereis |
| t. | Star fish |
A) A=s, B=r, C=p. D=q
B) A=r, B=s, C=p, D=t
C) A=q, B=s, C=t,D=p
D) A=t, B=q, C=s, D=r
Correct Answer: A
Solution :
The correct matching is as follows :| Organism Zological name Class |
| Star fish Astropecten Asteroidea |
| Scorpion Palamnaeus Arachnida |
| Sand worm Nereis virens Polychaeta |
| Apple snail Pila globosa Gastropoda |
| Liver fluke Fasciola hepalica Trematoda |
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