How does chewing food in the mouth help digestion?
Answer and explanation
Correct answer: Food breaks into small pieces and mixes well with saliva
The governing concept is mechanical digestion and the beginning of chemical digestion. Teeth break food into smaller pieces, increasing the surface area on which digestive enzymes can act. The tongue mixes these pieces with saliva, and salivary amylase begins starch digestion. Therefore option A is correct. Chewing does not convert food directly into urine or blood, and it is not a process of removing oxygen from food, so B, C and D are unsuitable.
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What is the correct answer to this question?
Food breaks into small pieces and mixes well with saliva
Why is this the correct answer?
The governing concept is mechanical digestion and the beginning of chemical digestion. Teeth break food into smaller pieces, increasing the surface area on which digestive enzymes can act. The tongue mixes these pieces with saliva, and salivary amylase begins starch digestion. Therefore option A is correct. Chewing does not convert food directly into urine or blood, and it is not a process of removing oxygen from food, so B, C and D are unsuitable.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Life Processes.
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