Question

20)Which statement is true about Peristalsis?
(a) The wearing out of colour on the parts of leaves due to lack of carbon dioxide and
chlorophyll
(b) The process of breakdown of large food molecules into simpler molecules by the amylase
enzyme
(c) The movement of food through alimentary canal by the wavelike movement controlled by
involuntary muscles
(d) The process by which digested food is carried by the blood to different cells in the body​

Answer 1

Answer:

c is correct

Explanation:

I hope it will help

Answer 2

The movement of food through alimentary canal by the wavelike movement controlled by involuntary muscles is called Peristalsis.

• Peristalsis in general, refers to the series of contraction and relaxation into the digestive system to move down the food into the stomach from the mouth.
• Peristaltic movement is of zig-zag type.
• Peristalsis is an involuntary process which initiates in the oesophagus, where no digestion of food takes place.
• The food mixed with saliva called the bolus moves down the oesophagus without any change into the stomach and mixes with acid to form chyme.
• Peristalsis majorly occurs in the oesophagus, stomach and small intestine part of the gastrointestinal tract of the human body.
• Peristalsis also occurs in small intestine to absorb the nutrients in the blood and in large intestine, to remove the waste products.

Hence, the correct answer is Option 'C'.

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