AIPMT Biology 2012 Questions and Answers

21. Gymnosperms are also called soft wood spermatophytes because they lack
a) Thick walled tracheids b) Xylem fibres c) Cambium d) Phloem fibres

22. Which one of the following is common to multicellular fungi, filamentous algae and protonema of mosses
a) Mode of Nutrition b) Multiplication by fragmentation c) Diplontic life cycle d) Members of kingdom plantae

23. Evolution of different species in a given area starting from a point and spreading to other geographical areas is known as
a) Migration b) divergent evolution c) Adaptive radiation d) Natural selection

24. Monascus purpureus is a yeast used commercially in the production of :
a) Citric acid
b) Blood cholesterol lowering statins
c) Ethanol
d) Streptokinase for removing clots from the blood vessels

25. The most abundant prokaryotes helpful to humans in making curd from milk and in production of antibiotics are the ones categorized as :
a) Chemosynthetic autotrophs
b) Heterotrophic bacteria
c) Cyanobacteria
d) Archaebactera

26. Motile zygote of Plasmodium occurs in
a) Human RBCs b) Human liver c) Gut of female Anopheles d) Salivary glands of Anopheles

27. Widal Test is carried out to test :
a) HIV/AIDS b) Typhoid fever c) Malaria d) Diabetes mellitus

28. The extinct human who lived 1,00,000 to 40,000 years ago, in Europe, Asia and parts of Africa, with short stature, heavy eye brows, retreating fore heads, large jaws with heavy teeth, stocky bodies, a lumbering gait and stooped posture was :
a) Cro-magnan humans b) Ramapithecus c) Homo habilis d) Neanderthal human

29. Which part of the human ear plays no role in hearing as such but is otherwise very much required ?
a) Vestibular apparatus b) Ear ossicles c) Eustachian tube d) Organ of corti

30. Which one of the following is the correct statement for respiration in humans ?
a) Workers in grinding and stone-breaking industries may suffer, from lung fibrosis
b) About 90% of carbon dioxide (CO2) is carried by haemoglobin as carbamino haemoglobin
c) Cigarette smoking may lead to inflammation of bronchi
d) Neural signals from pneumotoxic centre in pons region of brain can increase the duration of

Learn more
21. a) Thick - walled tracheids
22. b) Multiplication by fragmentation
23. c) Adaptive radiation
24. b) Blood cholesterol lowering statins
25. b) Heterotrophic bacteria
26. c) Gut of female Anopheles
27. b) Typhoid fever
28. d) Neanderthal human
29. a) Vestibular apparatus
30.a) Workers in grinding and stone-breaking industries may suffer, from lung fibrosis


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