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Biology Class 9 Chapter 8 Nutrition-14
1.
Mastication of food takes place in the?
a) Oral cavity
b) Stomach
c) Intestine
d) Pancreas
2.
The grinding of food by teeth is known as?
a) Mastication
b) Absorption
c) Assimilation
d) Excretion
3.
Lubrication of food is mainly taking place in the?
a) Oral cavity
b) Stomach
c) Intestine
d) Liver
4.
The three pairs of salivary glands produce?
a) Saliva
b) Blood
c) Mucus
d) Urine
5.
Chemical digestion of food takes place in the?
a) Oral cavity
b) Stomach
c) Intestine
d) Liver
6.
Salivary amylase enzyme is present in?
a) Saliva
b) Blood
c) Stomach
d) Urine
7.
Salivary amylase digests?
a) Starch
b) Glycogen
c) Proteins
d) Vitamins
8.
During chewing, lubrication and semi digestion, the pieces of food are converted into a small spherical mass called as?
a) Bolus
b) Saliva
c) Chyme
d) None
9.
In adult human, the length of oesophagus is?
a) 25 cm
b) 30 cm
c) 20 cm
d) 40 cm
10.
The opening of the trachea is called as?
a) Glottis
b) Epiglottis
c) Oesophagus
d) Stomach
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