Question

Question 6 Given the dental formula of human beings

Class - XI - Biology Chapter Digestion and Absorption Page No. 267

Answer 1

★In infants :-

→Incisors - 2/2 ; Canines - 1/1 ; Premolars - 0/0 ; Molars - 2/2

→ That is 2102/2102 ; Upper half and lower half.

★Up to 17 years :-

→Incisors - 2/2 ; Canines - 1/1 ; Premolars - 2/2 ; Molars - 2/2

→That is 2122/2122 ; Upper half and lower half

★Adults :-


→Incisors - 2/2 ; Canines - 1/1 ; Premolars - 2/2 ; Molars - 3/3

→That is 2123/2123 ; Upper half and lower half