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प्रश्न
Cellulose-rich food substances are good source of roughage in human beings because ______.
पर्याय
human beings do not have cellulose-digesting enzymes.
cellulose gets absorbed in the human blood and converts into fibres.
the cellulose-digesting bacteria convert cellulose into fibres.
cellulose breaks down into smaller components which are egested as roughage.
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उत्तर
Cellulose-rich food substances are good source of roughage in human beings because human beings do not have cellulose-digesting enzymes.
Explanation:
Human beings do not have cellulose-digesting enzymes in their bodies and are therefore unable to digest cellulose. Since it is not digested, it passes down the entire digestive tract from mouth to anus. It acts as roughage, adds bulk to the food and helps the body to easily get rid of undigested food.
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संबंधित प्रश्न
Which part of the digestive canal is involved in:
Chewing of food ______.
Name the main organs of the human digestive system. Also name the associated glands.
Which of the following is the correct sequence of parts as they occur in the human alimentary canal?
(a) Mouth → Stomach → Small intestine → Oesophagus → Large intestine
(b) Mouth → Oesophagus → Stomach → Large intestine → Small intestine
(c) Mouth → Stomach → Oesophagus → Small intestine → Large intestine
(d) Mouth → Oesophagus → Stomach → Small intestine → Large intestine
The water from the digested food is mainly absorbed by
Define the following term:
Peristalsis
Define the following term:
assimilation
Give reasons for the following.
Meat eating animals have strong canines.
What do you mean by nutrition?
Identify the salivary gland lying below the tongue.
What will happen if the mucus is not secreted by the gastric glands?
