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| 1. |
What is torsion.? describe the phenomenon with suitable illustration.5 marks |
| Answer» TORSION (twisting) is the rotation of visceral organs in anticlockwise direction through an angle of 180° on the REST of the body during LARVAL development. The phenomenon takes place in the free-swimming (veliger) larva of gastropods and converts the symmetrical larva into an ASYMMETRICAL adult.Explanation:Hope it's helpful!!!! | |