Available Answers

1. 1.

   State true or false.

   1. You should eat too much of sugary snacks.
   2. Dentine protects the inner part of tooth, called enamel.
   3. The upper part of tooth, that is, visible is root.
   4. Premolars are eight in number, four in upper jaw and four in lower jaw.
   5. Four teeth at the back of mouth, called wisdom tooth, develop between the age of 17 and 25 years.
2. 2.

   Fill in the blanks.

   1. __________ is the process of taking in food and using it for groeth and repair.
   2. __________ are organisms that cannot be seen by our naked eyes.
   3. Wheat and rice are excellent source of __________.
   4. Food pipe is also called as __________.
   5. Mouth is the first part of the alimentary canal and performs __________.
3. 3.

   Vowels are missing from the following words. Fill in the blanks and find how many can you complete.

   1. br_sh
   2. j_ws
   3. c_v_ty
   4. m__th
   5. cr_wn
   6. cl__n
   7. n_tr_t__n
   8. d_c_y
   9. d_nt_st
   10. t__thbr_sh
   11. fl_ss
   12. sm_l_
   13. t__th
   14. f__d
   15. t__thp_st_
   16. g_ms
4. 4.

   Choose the correct option and fill in the blanks.

   1. Eating too many __________ (chocolates/ fruits) causes tooth decay.
   2. Disease causing microbes are called __________ (germs/ crown).
   3. The four chisel-shaped teeth at the front of mouth of each jaw are called __________ (incisors/ canines).
   4. Food passes from mouth through __________ (tongue/ oesophagus) into stomach.
   5. Liver produces digestive juice called __________ (saliva/ bile).
5. 5.

   State true or false.

   1. Saliva is secreted in the stomach.
   2. Incisors are also called as wisdom teeth.
   3. The process of digestion starts in mouth.
   4. Eating too many sweets is harmful for the teeth.
   5. The large intestine is also referred to as colon.
6. 6.

   Guess one word for the following.

   1. The soft part present inside the dentine.
   2. The outer cover of a tooth.
   3. Part of body where digestion of food starts.
   4. A harmful microbe.