Why is peristalsis necessary in the oesophagus?
Answer and explanation
Correct answer: To push food to the stomach
Peristalsis is the rhythmic, wave-like contraction and relaxation of muscles in the wall of the oesophagus. These involuntary waves push the swallowed food bolus downward, even when a person is not upright, until it reaches the stomach. Thus option A is correct. The oesophagus does not add light energy, filter food into blood, or direct food toward the lungs; those suggestions confuse separate body functions.
Frequently asked questions
What is the correct answer to this question?
To push food to the stomach
Why is this the correct answer?
Peristalsis is the rhythmic, wave-like contraction and relaxation of muscles in the wall of the oesophagus. These involuntary waves push the swallowed food bolus downward, even when a person is not upright, until it reaches the stomach. Thus option A is correct. The oesophagus does not add light energy, filter food into blood, or direct food toward the lungs; those suggestions confuse separate body functions.
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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