Biology chapter 12
CHAPTER NO. 12 BIOLOGY 1ST PART
1) Pepsin hydrolyzes following substance to produce peptones and polypeptides
a) Carbohydrates b) Proteins c) Lipids d) Vitamins
2) What prevents the underlying walls from being digested in stomach
a) Pepsinogen b) HCl c) Mucus d) All of these
3) This is not the main organ of Hydra
a) Stomach b) Coelenteron
c) Gastrovascular cavity d) Digestive cavity
4) What term is employed to the loss of appetite due to the fear of becoming obese
a) Dyspepsia b) Anorexia nervosa
c) Constipation d) Bulimia Nervosa
5) Which is not symptom of botulism
a) Double vision b) Flatulence
c) Diarrhoea d) Abdominal pain
6) It may precipitate in gall bladder to produce gall stones which may block release of Bile
a) Vitamin A b) Water c) Cholesterol d) Iron
7) Enterokinase is secreted by the lining of
a) Jejunum b) Ileum c) Caecum d) Duodenum
8) Larynx of man is made up of
a) Cartilage b) Connective tissue
c) Bone d) Muscle
9) Mouth of planaria is located on the
a) Dorsal surface b) Ventral surface
c) Posterior side d) Lateral side
10) Which is the organic debris from decomposing plants and animals
a) Detritivores b) Humus c) Detritus d) Herb
11) Which is essential but does not provide energy for metabolism
a) Lipid b) Carbohydrate c) Protein d) Vitamin
12) Which is not wrong structure in month that prevents food from entering the nasal cavities
a) Hard palate b) Tongue c) Soft palate d) Epiglottis
13) Dipeptides are changed into amino acid by
a) Maltase b) Lipase c) Amino peptidase d) Erepsin
14) Mucus and serum like fluid are the secretions of
a) Lips b) Cheeks c) Stomach d) Tongue
15) Pancreatic and hepatic secretions are also stimulated by a hormone called
a) Gastrin b) Secretin c) Pepsin d) Saliva
16) Dodder is a plant
a) Thallus b) Stemless c) Rootless d) Leafless
17) In Lichen, alga makes food while the fungus supplies
a) Protection b) Water c) Minerals d) All of these
18) Which structure on the roots contains nitrogen fixing bacteria
a) Plates b) Nodules c) Grains d) Sorus
19) Which is not part of large intestine
a) Caecum b) Colon c) Ileum d) Rectum
20) In stomach, regulation of secretion and motility is done by endocrine hormone called
a) Renin b) Insulin c) Gastrin d) Secretin
21) It is a disease in itself but symptomatic of other dis-orders or diseases
a) Ulcer b) Constipation
c) Dyspepsia d) Diarrhoea
22) Clostridium which causes botulism is a
a) Protozoan b) Virus c) Bacterium d) Alga
23) A toxic substance Ammonia, which is a waste product of amino acid metabolism is converted to
less toxic compound urea by:
a) Kidney b) Pancreas c) Liver d) Stomach
24) The only therapy for one of the following disease is the improvement of hygiene and the use of
food softners
a) Ulcer b) Piles
c) Diarrhoea d) Food poisoning
25) Canines are missing in
a) Cat b) Lion c) Tiger d) Horse
26) Which structures of a fresh water mussel are covered with cilia
a) Shell halves b) Mouth c) Gills d) Foot
27) Which is not wrong for ectoparasite
a) Flea b) Tapeworm c) Entamoeba d) Viruses
28) Snail feeds by using rasping organ called
a) Lung b) Foot c) Shell d) Radula
29) When leaf margins become yellow and brown in colour, then soil is deficient in
a) Calcium b) Potassium c) Magnesium d) Iron
30) Sundew leaves bear numerous hair-like structures called
a) Cilia b) Flagella c) Tentacles d) Pseudopodia
31) A blind sac that projects from the large intestine between ileum and colon is known as
a) Appendix b) Caecum
c) Jejunum d) Duodenum
32) The urge to defecate is depressed in:
a) Dyspepsia b) Obesity c) Piles d) Ulcer
33) Initial treatment of Bulimics is to overcome the effects of
a) Weight loss b) Under nutrition
c) Malnutrition d) Both a and c
34) In human large intestine, the function of absorption, storage and food movement is performed by
a) Endothelial cells b) Epithelial cells
c) Goblet cells d) Parietal cells
35) If Bile pigments are prevented from leaving digestive tract, they may accumulate in
causing jaundice.
a) Brain b) Liver c) Blood d) Heart
36) The length of jejunum is about
a) 1.4 meter b) 2.4 meter c) 0.4 meter d) 0.24 meter
37) In which disease, appendix gets inflamed due to entrapping and then purification of food
a) Appendicitis b) Ulcer c) Constipation d) Diarrhoea
38) It is common example of detritivores
a) Pheretima b) Helix c) Homo d) Bear
39) Antiperistaltic movements result in
a) Nausea b) Flatulence c) Vomiting d) Dyspepsia
40) In cockroach, partly digested food is stored in
a) Gizzard b) Crop c) Rectum d) Hepatic caecum
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