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

A. Less
B. Greater
C. The same
D. Not related

A. Same as permanent teeth
B. Inclined in an apical direction in the cervical third of crown
C. Inclined in an occlusal direction in the cervical third of crown
D. None of the above

A. 25 μm
B. 50μm
C. 75μm
D. 100μm

A. Four pulp horn and three root canal
B. Three pulp horn and three root canal
C. Two pulp horn and two root canal
D. Two pulp horn and three root canal

A. Slender mesiodistally
B. Slender anteroposteriorly
C. Bulkier mesiodistally
D. Buliker anteroposteriorly

A. Grooves
B. Fissures
C. Cusps
D. All of the above

A. Mandibular 1st molar
B. Mandibular2nd molar
C. Maxillary 2nd molar
D. None of the above

A. One
B. Two
C. Three
D. Four