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1. Arjun is studying in tenth standard. He was down with fever and went to meet the doctor. As he went to the clinic he saw a patient undergoing treatment for severe leech bite. Being curious, Arjun asked the doctor why leech bite was not felt as soon as it attaches to the skin ? What would have been the reply given by the doctor?
The leech creates a wound with its jaws by movement. The suctions the blood. The secretion of the is discharged into the wound. They inject an into the host, making the bite unnoticeable. Saliva includes an active substance known as , which inhibits .
2. Shylesh has some pet animals at his home. He has few rabbits too, one day while feeding them he observed something different with the teeth. He asked his grandfather, why is it so? What would have been the explanation of his grandfather?
Teeth are structures used to food. Teeth such as incisors, canines, premolars, and molars are visible. In rabbit, canines are . is a space between the that is distinct from the teeth. It aids in the of food.
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