Question

D. Give one word answers.
1. Chewing of food in the mouth and its
mixing with saliva.
2. Movement along the muscles of food pipe
to help unidirectional movement of food.
3. A parasite which lives inside the body of
the host.​

Answer 1

Explanation:

1.bolus

2.The smooth muscles of the esophagus undergo peristalsis that pushes the food toward the stomach. The peristaltic wave is unidirectional—it moves food from the mouth the stomach, and reverse movement is not possible, except in the case of the vomit reflex.

3.Endoparasite

Answer 2

Answer:

1. chewing of food in the mouth and its eat after mixing with saliva

2. movement along the muscles of food pipe at the help of unidirectional movement of food

3. A parasite in which lives the body of in the host