Which of the following statement is incorrect?

The tongue aids in the digestion of food.

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Salivary amylase partially converts starch to maltose.

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The tongue keeps the food in place in the mouth while it is being chewed.

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The digestive juices can react more easily with the food when chewed.

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Solution

The correct option is A
The tongue aids in the digestion of food.

The function of the tongue is to mix saliva wth food and help the teeth in its mastication. Tongue does not affect the digestion process. Saliva has enzyme salivary amylase which helps to partially convert starch to maltose, a form of sugar. The digestive juices can react more easily with the food when it is chewed.

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Question 10
Cud is the name given to the food of ruminants which is

(a) Swallowed and undigested
(b) Swallowed and partially digested
(c) Properly chewed and partially digested
(d) Properly chewed and completely digested

Amylase is a digestive enzyme that acts on starch in food, breaking it down into smaller carbohydrate molecules. Once food along with salivary amylase enters the stomach, action of hydrolytic enzymes lead to amylase deactivation. In case, the undigested starch still remains, how will it be digested?

Mark ‘T’ if the statement is true and ‘F’ if it is false:

(a) Digestion of starch starts in the stomach. (T/F)

(b) The tongue helps in mixing food with saliva. (T/F)

(d) The ruminants bring back swallowed grass into their mouth and chew it for some time. (T/F)

Q. Question 11
Choose the correct order of terms that describes the process of nutrition in ruminants.

(a) Swallowing