Question

1. Define the following.
(a) Alimentary canal
(b) Digestive system
(d) Villi
2. Name the following.
(a) Organs of the human alimentary canal
(b) Types of teeth in a human adult
(c) Largest gland in the human body
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Answer 1

Answer:

1(a).The alimentary canal is a continuous passage starting from the mouth and ending at the anus, which carries food through different parts of the digestive system and allows waste to exit the body

b.The system which converts the components of food into simple and absorbable substances is called digestive system.

d.Villi are finger like projections of the walls of the small intestine. They help increase the absorptive surface area and thereby the rate of absorption of nutrients.