Process of conversion of complex food substances to simple absorbable form is called :-

1. Assimilation

2. Deamination

3. Digestion

4. Absorption

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

Match the following columns and choose the correct answer from the options given below

a. Indigestion                     (i) Ejection of stomach contents through the mouth

b. Constipation                   (ii) It reduces the absorption of food

c. Diarrhoea                       (iii) The faeces are retained in the rectum as the bowel  movements becomes irregular

d. Vomiting                        (iv) Food is not properly digested

1. a-iv, b-i, c-ii, d-iii

2. a-iv, b-iii, c-i, d-ii

3. a-i, b-ii, c-iii, d-iv

4. a-iv, b-iii, c-ii, d-i

Principal organ for the absorption of nutrients is

1. Buccal cavity

2. Stomach

3. Small intestine

4. Large intestine

Mark the incorrect statement

(1) Fructose, mannose and some amino acids are

      absorbed by facilitated diffusion 

(2) Various nutrients like amino acids, fatty acid,

     monosaccharides like glucose, electrolytes like

     ${\mathrm{Na}}^{+}$ are absorbed by active transport only 

(3) Fatty acid and glycerol are first incorporated 

     into small droplets called micelles which move

     into intestinal cell of mucosa 

(4) Transport of water depends upon osmotic

     gradient

Mark the correct pair of food components in human

which reach to stomach in undigested form 

(1) Starch and fat 

(2) Starch and Protein

(3) Starch and Cellulose

(4) Cellulose and fat

Bile duct and pancreatic duct open together

into the duodenum as the common hepato-

pancreatic duct which is guarded by a sphincter

called

(1) Sphincter of Boyden

(2) Pyrolic sphincter

(3) Sphincter of Oddi 

(4) Gastro-oesophageal sphincter

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.

(1) Vomiting

(2) Constipation

(3) Indigestion 

(4) Diarrhoea

Match the following

    Column I                      Column II

a. Sphincter of boyden  (i) Regulates openings of 

                                       oesophagus into 

                                        stomach

b. Sphincter of Oddi     (ii)  Surrounds the

                                        opening of bile duct

                                        into pancreatic duct

c. Cardiac sphincter      (iii) Regulates the 

                                         opening of stomach 

                                         into small intestine

d. Pyloric sphincter       (iv)  Surrounds ampulla of 

                                         vater

(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)

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