Rupa and Sachin observed an animal in their school garden. Rupa called it an insect while Sachin identified it as an earthworm. Which one of the following characteristics confirms that it is an insect?
1) The animal had jointed legs.
2) Body of the animal had very little segmentation.
3) Body of the animal was cylindrical
4) Body of the animal was bilaterally symmetrical.
1) The animal had jointed legs.