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MCQ Questions for Class 12 Biology Set 5
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1. Allegens:
Infectious and increase secretion of IgE antiboides
Non-infectious and increase secretion of IgE antibodies
Infectious and increase secretion of IgS antibodies
Non-infectious and increase secretion of IgM antibodies
2. Both sickle cell anaemia and Huntington’s chores are:
Bacerial diseases
Congenital diseases
Pollution related diseases
Viral diseases
3. In AIDS, which of these cells are most affected:
B-cells
T-cells
Monocytes
Neutrophils
4. Passive immunity can be obtained by injecting:
Antibodies
Antigens
Antibiotics
Vaccination
5. Changa’s disease is caused by:
Trypanosoma ganabiense
Trypanosoma Cruzi
Trypanosoma-rhodesiense
Leishmania donovani
6. Which of the following disease effect the immune system directly?
Cholera
Tuberculosis
Tetanus
AIDS
7. Which of the following vaccines are injected at the age of 11/2, 21/2 and 31/2 months:
DPT-Hib and Polio
Polio and BCG
BCG and DTP-Hib
BCG and Hepatitis-B
8. The drug which stimulates the nervous system and makes him more wakeful alert and active is called :
Sedative
Opiate narcotic
Stimulant
Hallucinogen
9. Ascaris is most commonly found in:
Men
Women
Children
Both (a) and (b)
10. Kupffer cells are present in:
Liver
Small intestine
Pancreas
Thyroid
11. Intermediate host of Schistosoma is:
Snail
Mosquito
Housefly
Sheep
12. A person showing unpredicatable moods, outbursts of emotion quarrelsome behaviour and conflicts with other is suffering from:
Addictive disorders
Schizophrenia
Borderline personality disorder (BOD)
Mood disorders
13. Current treatment for cancer does not include which of the following:
Chemotherapy
Radiaotherapy
Surgery
Physiotherapy
14. Screening test of AIDS is:
Western blot
ALISA
PCR
Southern blot
15. The vactor of Break bone fever is:
Anopheled
Aedes
Culex
None of these
16. An allergic reaction is intiated by antibodies of, group :
IgG
IgE
IgM
IgA
17. In Malaria, the product released by mosquito into blood that causes chill and fever is called:
Haematin
Schuffher’s dots
Haemozoin
Haemotoxin
18. HIV that causes AIDS, first starts destroying:
Helper T-lymphocytes
B-Lymphocytes
Leucocytes
Thrombocytes
19. Morphine obtained from opium is:
Latex
Pome
Alkaloid
Tannin
20. Zoological name of Indian buffalo is:
Bubalus bubalus
Bos indicus
Bos taurus
Gallusgallus
21. The best milk breed in the world is:
Chittgong
Deoni
Holstein-Friesian
Sindhi
22. There crops that contribute maximum to global food grain production are :
Wheat, rice and maize
Wheat rice and barley
Wheat, maize and sorghum
Rice, maize and sorghum
23. The world’s highly prized wool yielding ‘Pashmina’ breed is :
Sheep
Goat
Goat-sheep cross
Mashmir sheep-Afghan sheep cross
24. Both in callus and suspension culture commonly used auxin is:
NAA
IEA
2-4D
Abscisic acid
25. Somatic hybridization can be done by:
By Protoplast fusion
By Haploid anther
By Cell culture
(By Totipotency
26. India’s w heat yield revolution in the 1986s was possible primarily due to:
Mutations resulting in the plant height reduction
Quantitative trait mutations
Hybrid seeds
Increased chlorophyll content
27. One of the following is a disease of poultry:
Anthrax
Pebrine disease
Ranikhet disease
Foot and mouth disease
28. Choose the cat fish from the following:
Katla Katla
Wallage attu
Labeo rohita
Cirrhinus mrigaja
29. The technique of obtaining large number of plantlets by tissue culture method is called :
Organ culture
Micro-propagation
Macro-propagation
Plantlet culture
30. Most cultivated plants are:
Autopolyploid
Allopolyploid
Aneuploids
Haploids
31. Triticale first main-made corral crop has been obtained by crossing wheat with
Rye
Pearl mille
Sugarcane
Barley
32. Most nutritious among the following is:
Wheat
Maize
Pearley
Rice
33. Hybrid vagour is induced by:
By Clonal selection
By Crossing of plant
By crossing of two plants
By Species differentiation
34. Norman Borlaugh known as “Father of Green Revolution” has developed new cultivating variety of:
Paddy
Rice
Wheat
Sugarcane
35. Bacillus thuringiensis (Bt) strains have been used for designing novel:
Bio-metallurigcal techniques
Bio-mineralization process
Bio-insecticidal plants
Bio-fertilizers
36. Streptococcus is used in the preparation of:
Wine
Idli
Paneer
Bread
37. Nif gene occurs in:
Peiiicillium
Rhizobium
Aspergillus
Streptococcus
38. Azoila has symbiotic relationship with:
Chlotfila
Anabaena
Nostoc
Tolypothrix
39. Term antibiotic was first used by :
Flemming
Pasteur
Waksman
Lister
40. A free living anaerobic nitrogen fixing bacterium is:
Rhizobium
Streptococcus
Azotobactor
Clostridium
41. Citric acid is produced by:
Rhizopus
Mucor
Aspergillus
Saccharomyces
42. In nostoc, enzyme nitrogenase occurs in :
Vegetative cells
Heterocysts
Both (a) and (b)
Only in hormogones
43. Usnic acid is an antibiotic obtained from :
Fungi
Bacteria
Lichens
(Algae
44. By anobacteria are useful biofertilizers in the; field of:
Wheat
Maize
Rice
Sugarcane
45. Streptomycin is produced by:
By Streptomyces Scoleus
By Streptomyces fradiae
By Streptomyces venezueleae
By Streptomyces griseus
46. Antibiotics are:
Medicines
Toxin
Plants
Syrups
47. A free-living aerobic and non-photosynthetic nitrogen fixing bacterium is:
Anabaena
Clostridium
Azotobactor
Rhizobium
48. For retting of jute, the fermenting microbe is:
Methanophilic bacteria
Butyric acid bacteria
Helicobactor pylon
Streptococcus lactin
49. Transgenic plants are develop by:
Introducing of foreign fenes
Clone and genetically modified genes
Genetic engineering
Purified genes
50. Two microbes found to be very useful in genetic, engineering are:
Escherichiya Coli and Agrobacterium tumefaciens
Virbio chloerae and tailed bacteriophage
Diplococcus sp and pseudomonas sp.
(None of these
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