Biology
State whether the following statements are True or False.
Wisdom tooth appears at the age of 5-6 years when the child starts going to school.
The temporary set of teeth includes incisors, canines and premolars only.
The ducts from the salivary glands open into the duodenum.
Saliva changes starch into maltose.
Digestive System
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Answer
False
Reason — Wisdom tooth appears at the age of 17-20 years.False
Reason — Children have only twenty teeth, called primary, temporary or milk teeth. They include the same 10 teeth in the upper and lower jaw:- 4 Incisors
- 2 Canines
- 4 Molars
False
Reason — The ducts from the salivary glands open into the mouth.True
Reason — Saliva contains an enzyme called amylase which converts starch int maltose.
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Fill in the blanks in the table (1-5) by selecting the suitable names of substances from the list given below:
[lipase, peptones, fatty acids, proteoses, protein].
Digestive
Enzymesacts on to form (i) Pepsin …….(2)…….. …….(3)…….. and …….(4)…….. (ii) …….(1)…….. fats …….(5)…….. Identify and name the "four" types of teeth shown below and state their functions.
(i) Name the juice secreted by the liver.
(ii) Name the organ where this juice is temporarily stored.
(iii) What is the main function of this juice?
Name the following:
(i) End product of starch after digestion.
(ii) The organ where protein digestion begins.
(iii) The organ into which the pancreatic juice and the bile juice are poured.
(iv) The enzyme which digests fat in ileum.
(v) The simplest form of carbohydrates.
(vi) The part of alimentary canal where water from the undigested food is absorbed.
(vii) The end product of protein digestion.