Frenulum is:

(1) Adenoid present on pharyngeal wall

(2) Tonsils located on lateral wall of soft palate

(3) Fold attaching tongue to the floor of oral cavity

(4) V-shaped sulcus for terminalis on tongue

Muscularis layer in the wall of the alimentary canal is formed by smooth muscles usually arranged into:-

1. an inner circular and an outer longitudinal layer.
2. an inner longitudinal and an outer circular layer.
3. both circular layers
4. both longitudinal layers

The hard chewing surface of teeth helping in mastication of food is called:

(1) Dentine

(2) Frenulum

(3) Root

(4) Enamel

In mammals, the teeth are.
I. only two sets, present throughout life.
II. embedded in the socket of the jaw bones.
III. different types.

These conditions are respectively referred as
1. diphyodont, heterodont and thecodont
2. diphyodont, thecodont and heterodont
3. the codont, diphyodont and heterodont
4. the codon, heterodont and diphyodont

Alimentary canal begins with :-

1. An vertical slit, the mouth

2. An anterior opening, buccal cavity

3. An ventral slit, the mouth

4. An opening, the mouth