Which of the following statements is incorrect?

1.	About 30% of starch is hydrolysed in the buccal cavity
2.	Small amounts of lipases are also secreted by gastric glands
3.	Chymotrypsinogen is activated by trypsin
4.	Brunner's glands secrete enzymes and mucus

Transverse section of gut shows four layers of the wall 

i.e serosa, muscularis, submucosa and mucosa.

Which of the following statements is not correct

regarding its arrangement and modification?

Common bile duct includes

Which type of cells are the part of tubular glands of the stomach epithelium?

A. Pariental cells 

B. Peptic cells

C. Zymogen cells 

D. Oxyntic cells

1. D only 
2. A & d
3. A, B & c 
4. A, B, C & D

Digestion of fats starts in 

Given below is a diagrammatic representation of 

transverse section of gut

Choose the option which is correct for the layers 

labelled as A , B, C, and E

1. A $—$ Serosa

     B  $—$ Longitudinal muscle layer

     C  $—$ Circular muscle layer

     D  $—$ Mucosa

     E  $—$  Submucosa

2. A  $—$  Mucosa

     B  $—$   Circular muscle layer

     C  $—$   Longitudinal muscle layer

     D  $—$   Submucosa

     E  $—$    Serosa

3. A  $—$    Serosa

     B  $—$    Circular muscle layer

     C  $—$    Longitudinal muscle layer

     D   $—$    Submucosa

     E   $—$     Mucosa

4. A   $—$    Serosa 

     B    $—$    Longitudinal muscle layer

     C   $—$     Circular muscle layer

     D   $—$     Submucosa

     E   $—$      Mucosa

Gastric glands are found in

Carbohydrates in the chyme are hydrolysed to disaccharide by amylase of

Gastric juice contains

1. Trypsin, lipase, rennin

2. Pepsin, lipase, rennin

3. Trypsin, pepsin, lipase

4. Pepsin, rennin, amylase

The saliva secreted by salivary glands does not 

1. Contain electrolytes like ${\mathrm{Na}}^{+}$, $K^{+}$ , ${\mathrm{CI}}^{-}$ and

     ${\mathrm{HCO}}_3^{-}$ 

2. Give safety against dental carries
3. Bring about hydrolysis of starch upto 90%
4. lnitiate the process of digestion