A. Enamel rods at cervical region directed occlusally
B. Results in constriction at cervical region
C. Is characteristic of decidous teeth
D. All of the above

A. Calcification of maxillary primary first premolar is completed at birth
B. Mandibular first molar erupts at one and half years of age
C. The crowns of primary dentition are more yellowish than permanent
D. The primary dentition is initiated at 10^thmonth in uterus

A. 3
B. 6
C. 4
D. 5

A. Decidous mandibular 1st molar
B. Decidous maxillary 1st molar
C. Decidous maxillary 2nd molar
D. Decidous mandibular 2nd molar

A. Premolars, incisors and 1st molars
B. Canine and 2nd molars
C. Canines, premolars and2^ndmolars
D. Incisors and 1st molars

A. 3-4 months
B. 4-5 months
C. 5-6 months
D. 6-7 months

A. 4 yrs
B. 6 yrs
C. 8 yrs
D. 10 yrs