1. lipase solution was added to milk.
after 30 minutes,the milk had more acidic
What were the substrate and product in this reaction?
substrate ptoduct
a. fats amino acids
b fats fatty acids
c. proteins amino acids
d. proteins fatty acids
2. part of alimentary canal exposed in Ali’s feeding is
a. pharynx b. oesophagus c. stomach d . both b & c
3. if bile duct is removed the digestion of -----------is reduced
a. carbohydrates b. fats c. proteins d. vitamins
4. which region of the alimentary canal has the greatest surface area?
a. colon b. duodenum c. ileum d. stomach
5. cuscuta is a leafless plant,it is
a. total stem parasite b. partial stem parasite c. partial root parasite d. total root parasite
6. -------organ of the human digestive system fabricates hydrochloric acid
a. stomach b. small intestine c. large intestine d. pharynx
7. the dentine that forms the crown of the tooth is covered with a substance-----
a. iron pyrite b. aluminium silicate c. enamel d. silica
8. swallowing is initiated by the voluntary action of
a. pharynx b. mouth c. tongue d. stomach
9. which two organs are connected by the hepatic portal vein?
a. intestine and kidneys b. intestine and liver c. liver and kidneys d. lungs and heart
10. the rennin present in gastric juice helps to
a. digest the fats b. coagulates the milk c. digest fats d. digest sucrose
11. an example of solitary lymph vessel present in small intestine is
a. A b. B c. C d. D
12. the body part which prevents the entry of food into trachea is
a. pharynx b. epiglottis c. tongue d. medulla oblongata
13. in man vermiform appendix helps in
a. absorption of fats b. absorption of amino acids
c. digestion of fats d. do not perform any function
14. the bile juice secreted from gall bladder is
a. product of secretion b. product of excretion
c. both a & b d. neither a nor b
15. the main chemical stimulus for pancreatic secretion is
a. secretin b. gastrin c. enrokinase d. pancaryomyzin
16. the carbohydrates are absorbed in ileum in form of
a. glucose b. fructose c. sucrose d. either a or b
17. the protein digestion begins occurs in
a. mouth b. stomach c. duodenum d. ileum
18. the approximate length of alimentary canal from mouth to anus is
a. 4 meters b. 6 meters c. 8 meters d. 9 meters
19. the typical brownish colour of feaces is due to the presence of
a. undigested fats in feaces b. undigested cellulose in feaces
c. bile pigments like biliverdin d. all of the above
20. in some people the formation of gall stone occur because of
a. precipitation of cholesterol b. precipitation of bile pigments
c. both a & b d. neither a nor b
21. the trypsin present in form of trypsinogen in pancreatic juice is activated by
a. gastrin from stomach b. enterokinase from ileum
c. bile juice from gall bladder d. mechanicl stimulation of duodenum
22. the gastric juice acts as a mild antiseptic because of the presence of
a. mucus b. pepsin c. hydrochloric acid d. all of the above
23. deficiency of magnesium results in
a. chlorosis b. premature death of plant
c. yellowing of leaf margins d. stunted growth
24. in which of the following insectivorus plants the leaf is bilobed with a midrib b/w them
a. pitcher plant b. venus fly trap c. sundew d. bladder wort
25. in herbivores one of the following is missing
a. incisors b. canines c. molars d. premolars
26. in cockroach food is grind in which of the following part of the gut
a. crop b. gizzard c. mesenteron d. malpighian tubule
27. parotid salivary glands are present
a. behind the jaws b. below the tongue c. infront of ears d. in the nasal cavity
28. common mussel belongs to one of the following category of feeders
a. fluid feeders b. filter feeders c. surface feeders d. macrophagus feeders
29. after eating,the PH in the mouth decreases.
Which statement explains this decrease?
a. bacteria release acids b. enzymes in saliva release acids
c. salivary glands release acids d. taste receptors release acids
30. abdominal pain,vomiting and diarrhea all are symptoms of
a. obesity b. food poisoning c. bulmia nervosa d. anorexia nervosa
