What is the wave-like movement that pushes food forward called?
Answer and explanation
Correct answer: Peristalsis
Peristalsis is the coordinated, wave-like contraction and relaxation of muscles in the wall of the alimentary canal. Behind the food bolus, muscles contract, while muscles ahead relax, producing forward movement through the oesophagus and intestine. Thus option A is correct. Transpiration is water loss from plants, respiration releases energy from food, and excretion removes metabolic wastes, so none of these describes food propulsion.
Frequently asked questions
What is the correct answer to this question?
Peristalsis
Why is this the correct answer?
Peristalsis is the coordinated, wave-like contraction and relaxation of muscles in the wall of the alimentary canal. Behind the food bolus, muscles contract, while muscles ahead relax, producing forward movement through the oesophagus and intestine. Thus option A is correct. Transpiration is water loss from plants, respiration releases energy from food, and excretion removes metabolic wastes, so none of these describes food propulsion.
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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