Questions and Answers
Class 7, Chapter 2 - Nutrition in Animals | NCERT
1.
What is digestion?
Breakdown of complex components into simpler substances
2.
What is another name of foodpipe?
oesophagus
Which statements are true?
3.
Each tooth is rooted in a separate socket in the gums.
True
4.
The process of taking food into the body is called ingestion.
False
5.
Tooth decay is caused by viruses.
False
6.
How often you should brush your teeth?
at least twice a day
7.
Carries air from nostrils to the lungs. What is it?
windpipe
8.
What is the widest part of alimentary canal?
stomach
9.
Put in order elements of human digestive system starting from mouth.
buccal cavityoesophagusstomachsmall intestinelarge intestinerectumanus
Match color with teeth name.
14.
At what age milk teeth usually fall off?
Between six to eight years.
15.
What is the function of saliva?
It breaks down the starch into sugars.
16.
Which elements of digestive tract secrete digestive juices?
inner walls of stomach, small intestine, salicary glands, liver, pancreas
17.
What acid is present in stomach?
hydrochloric acid
18.
Stomach digests only:
proteins
Which statements are true?
19.
Bile juice helps in digestion of fats.
True
20.
The pancreatic juice can digest sugars, fats and proteins.
True
21.
Villi are finger-like outgrowths of large intestine.
False
22.
What's the name of an organ in grass-eating animals and what is its role?
It is called Caecum and it helps those animals digest cellulose.
23.
What is this?
a starfish
24.
How long is large intestine?
about 1,5 metre
25.
In which organ absorption occurs?
small intestine
26.
How do we call process of removing faecal matter through the anus?
egestion
27.
What is the name of a medical condition when one passes watery stool frequently?
diarrhoea
28.
cud
partially digested grass
29.
rumen
part of stomach in grass-eating animals
30.
amoeba
single-celled organism living in water
31.
cellulose
sugar that cannot be digested by most animals
32.
glycerol
a substance formed as a result of the digestion of fats