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

Following are certain enzymatic reactions taking 

place in the human alimentary canal. Each 

reaction is depicted it with suitable enzyme A, B,

C and D. Find from the options the correct set of 

enzymes required to carry out these reactions

Starch $\stackrel{\mathrm{A}}{\to }$ Maltose

Nucleosides $\stackrel{\mathrm{B}}{\to }$ Sugars + Bases

Di and monoglycerides $\stackrel{\mathrm{C}}{\to }$ Fatty acids +

Glycerol

Trypsinogen $\stackrel{\mathrm{D}}{\to }$ Trypsin

1. A $-$ Pancreatic amylase

     B $-$ Nucleotidase

     C $-$ Lipase

     D $-$ Trypsin

2. A $-$ Salivary amylase

     B $-$ Nucleases

     C $-$ Dipeptidases

     D $-$ Enterokinase

3. A $-$ Dipeptidases

     B $-$ Nucleotidase

     C $-$ Lipase

     D $-$ Trypsin

4. A $-$ Salivary amylase

     B $-$ Nucleosidases

     C $-$ Lipase

     D $-$ Enterokinase

Match the following

1. a(ii), b(iv), c(iii), d(i)
2. a(iv), b(ii), c(i), d(iii)
3. a(iv), b(i), c(iii), d(ii) 
4. a(ii), b(iv), c(i), d(iii)

Mark the condition where food is not properly 

digested leading to feeling of fullness. This can be

caused due to inadequate secretion, food

poisoning, over eating etc.

Bile duct and pancreatic duct open together

into the duodenum as the common hepato-

pancreatic duct which is guarded by a sphincter

called

Mark the correct pair of food components in human

which reach to stomach in undigested form