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12th Biology chapter 12 Bihar board with NCERT-Details & Highlights
| name of content | 12th Biology chapter 12 full solution |
| content | Biology objective type MCQ question with answer |
| name of subjects | class 12 Biology |
| important for exam | Bihar board & other state board |
| pattern & Level | NCERT & State level question |
12th Biology chapter 12 all objective solutions – download PDF
1. ‘Cry-gene’ protects which crop from balkami?
-
- (A) Cotton
- (B) fire
- (C) Tea
- (D) Wheat
Answer: (A) Cotton
2. From which artificial seed is made?
-
- (A) somatic embryo
- (B) Bahubhun
- (C) Both ‘ A ‘ and ‘ B ‘
- (D) none of these
Answer: (A) Somatic embryo
3. What was the first clinical gene therapy used for?
-
- (A) adenosine deaminase deficiency
- (B) Chicken pox
- (C) Diabetes Mellitus
- (D) Rheumatoid Arthritis
Answer: (A) Deficiency of adenosine deaminase
4. Hybridization is recognized by
-
- (A) PCR
- (B) Autoradiography
- (C) ELISA
- (D) Electrophoresis
Answer: (B) Autorediography
5. Bt is a toxin
-
- (A) intracellular lipids
- (B) intracellular crystalline protein
- (C) Extracellular crystalline protein
- (D) Lipids
Answer: (D) Lipids
6. Who discovered the super bug?
-
- (A) Hargobind Khurana
- (B) Dilip Shah
- (C) By Anand Mohan Chakraborty
- (D) Robert
Answer: (D) Robert
7. The first biochemistry to be produced commercially by microbial clone and genetic engineering was?
-
- (A) Human insulin
- (B) penicillin
- (C) Interferon
- (D) called fertility
Answer: (B) Penicillin
8. ELISA is used to detect which diseases?
-
- (A) Hepatitis
- ( B ) AIDS
- (C) thyroid disorder
- (D) all of them
Answer: (D) All of them
9. For which of the following diseases ELISA should be done?
-
- (A) I am Leria
- (B) Typhoid
- (C) HIV (AIDS)
- (D) none of these
Answer: (C) HIV (AIDS)
10. Human protein is used for the treatment of which disease?
-
- (A) CUTE
- (B) smallpox
- (C) Arthritis
- (D) Infisima
Answer: (C) Arthritis
BSEB 12th biology chapter 12 most objective solution
11. Commonly used in the transfer of foreign DNA in crop plants
-
- (A) Trichoma ha annum
- (B) Myloidogyne incognita
- (C) Agrobacterium tumifaciens
- (D) Penicillium expansion
Ans: (C) Agrobacterium tumifaciens
12. In Transgenic Animals
-
- (A) Foreign RNA is present in all their cells
- (B) Foreign DNA is present in all their cells
- (C) Foreign DNA is present in some of their cells
- (D) Both ‘ B ‘ and ‘ C ‘
Answer: (B) Foreign DNA is present in all their cells
13. Permanent treatment of hereditary defect adenosine deaminase ADA deficiency
-
- (A) by enzyme replacement therapy
- (B) Proper penetration of lymphocytes by genetic engineering, including active ADA and CDNA
- (C) Activation of adenosine diaminos
- (D) Bone – marrow cells enter the early embryonic stage
Answer: (D) Bone – marrow cells enter the early embryonic stage
14. What is the time in Toxin’s friend?
-
- (A) Antitoxin is present inside its bacillus
- (B) Inactive prototoxin gets activated in the intestine of the insect
- (C) Bt protein remains active in the toxin Bacillus
- (D) The active toxin enters the ovary of the pest and hinders reproduction
Answer: (A) Antitoxin is present inside its bacillus
15. Transgenic plants are those which
-
- (A) Grow in artificial medium after external hybridization
- (B) produced from somatic embryos in artificial medium
- (C) enter the foreign DNA into the cell and make a new plant from that cell
- (D) Generate artificial medium after coupling of protoplasm
Answer: (C) Entering the foreign DNA into the cell and making a new plant from that cell
16. Alzheimer’s disease is related to the deficiency of which of the following in humans?
-
- (A) Dopamine
- (B) Glutamic acid
- (C) Acetyl Choline
- (D) Gram amino butyric acid
Answer: (C) Acetyl Choline
17. Who discovered antibiotics?
-
- (A) Fleming
- (B) Pasteur
- (C) Waxman
- (D) Lister
Answer: (A) Fleming
18. B7 is the toxin (Vip)
-
- (A) Intracellular lipids
- (B) Intracellular crystalline proteins
- (C) Extracellular crystalline proteins
- (D) Lipids
Answer: (B) Intracellular crystalline protein
19. A transgenic fruit contains genes for
-
- (A) for the synthesis of new proteins
- (B) resistance to antibiotics
- (C) in the manufacture of enzymes for antibiotics
- (D) all of the above
Answer: (D) All of the above
20. Monoclonal antibodies are obtained
-
- (A) from a parent to an antigen
- (B) from different parents for the same antigen
- (C) from one ancestral to many progenitors
- (D) from multiple parents for multiple antigens
Answer: (B) for the same antigen from different parents
12th biology chapter 12 mcq solution bihar board
21. Somatic Hybridization What can be done
-
- (A) by fusion of protoplasts
- (B) By half-multiplied pollen
- (C) By cell culture
- (D) By pollen culture
Answer: (A) By fusion of protoplasts
22. Which crop has been made pest resistant by using BE gene?
-
- (A) Cotton
- (B) Tomato
- (C) Maize
- (D) all of them
Answer: (A) Cotton
23. Antigen hirudin is found in
-
- (A) in the snake
- (B) lizard
- (C) in the leech
- (D) Scorpion
Answer: (C) In leech
24. The herbicide resistance gene in plants is
-
- (A) EC
- (B) Mt
- (C) BI
- (D) Gst
Answer: (D) GST
25. Used as natural genetic engineer
-
- (A) Agrobacterium tumifaciens
- (B) Bacillus thuringiensis
- (C) Aspergillus
- (D) Drosophila
Answer: (A) Agrobacterium tumifaciens
26. Biologically modified organisms can be
-
- (A) germ resistance
- (B) drought resistant
- (C) both
- (D) none of these
Answer: (C) Both
27. The most widely used biological weapon is
-
- (A) Bacillus subtilus
- (B) Biometallurgical techniques
- (C) Bacillus Angresis
- (D) Bioinsecticidal plants
Answer: (A) Bacillus subtilus
28. Vessels theorizep (IBt) differentiation is used for the rarefied task
-
- (A) Bio-fertilizers
- (B) Biometallic techniques
- (C) Biominiralization process
- (D) Bioinsecticidal plants
Ans: (A) Bio-fertilizer
29. The major technology used in agricultural biotechnology is
-
- (A) tissue culture
- (B) Conversion
- (C) Plant Reproduction
- (D) DNA replication
Answer: (A) Tissue culture
30. Drug manufactured by biotechnology which is used in cancer diagnosis
-
- (A) Interferon
- ( B ) HGH
- ( C ) TSH
- (D) Insulin
Answer: (A) Interferon
Important most mcq solution 12th biology chapter 12
31. The antibiotic flavicin is obtained from?
-
- (A) Asparagillus pumigatus
- (B) Aspergillus palevus
- (C) Streptomyces precession
- (D) Streptomyces freddy
Answer: (B) Aspergillus palevus
32. What is the gene taxi called during gene cloning?
-
- (A) Vaccine
- (B) Plasmid
- (C) Bacteria
- (D) Protozoan
Answer: (B) Plasmid
33. Which bacterium has been used for the first time as a biopesticide on a commercial scale in the world?
-
- (A) Vesillus thuringiensis
- (B) E. coli
- (C) Pseudomonas aeruginosa
- (D) Agrobacterium tumefaciens
Answer: (A) Vasculus thuringiensis
34. Which crop is used to prevent blindness in poor countries?
-
- (A) Golden Rice
- (B) Wheat
- (C) Gram
- (D) peas
Answer: (A) Golden Rice
35. Genetically engineered bacteria are used in the commercial production of
-
- (A) Thyroxine
- (B) Testosterone
- (C) Human insulin
- (D) Melatonium
Answer: (C) Human insulin
36. Which of the following micro-organism is used in the production of citric acid in industries?
-
- (A) Lactobacillus balgericus
- (B) Penicillium citrinus
- (C) Aspergillus niger
- (D) Rhizopus nigricans
Answer: (C) Aspergillus niger
37. Vacillus thuringiensis (Bt) strains being used
-
- (A) Bio-metallurgical technology
- (B) For bio-mineral processing
- (C) Bio-pesticide for plants
- (D) for bio-fertilizers
Answer: (C) Bio-pesticide for plants
38. The genetically engineered microorganism species used successfully in the biotreatment of oil spill is
-
- (A) Pseudomonas
- (B) Trichoderma
- (C) Xanthomonas
- (D) Bacillus
Answer: (A) Pseudomonas
39. From which transgenic species is human insulin produced commercially?
-
- (A) Rhizobium
- (B) Saccharomyces
- (C) Asterechia
- (D) Mycobacterium
Answer: (C) Asterchia
40. TI plasmid used in genetic engineering is obtained from
-
- (A) Bacillus thuringiensis
- (B) Escherichia coli
- (C) From Agrobacterium rhizobium
- (D) Agrobacterium tumefaciens
Answer: (D) Agrobacterium tumifaciens
most important mcq solution 12th biology chapter 12
41. The sheep called “Dali” was a clone, it had a tooth cell for
-
- (A) abdominal
- (B) skin
- (C) tongue
- (D) ear bulge
Answer: (C) Tongue
42. Natural genetic engineer is
-
- (A) Bacillus subtilus
- (B) Pseudomonas species
- (C) Escherichia coli
- (D) Agrobacterium tumefaciens
Answer: (A) Bacillus subtilus
43. Tram gene expression can be achieved by which of the following?
-
- (A) Inhibiting the exposure of a native gene
- (B) By blocking a generated biosynthesis pathway
- (C) by producing a protein that generates its own genotype of interest
- (D) all of the above
Answer: (D) All of the above
44. The first was the transgenic crop
-
- (A) yarn
- (B) linseed
- (C) Peas
- (D) Tobacco
Answer: (D) Tobacco
45. Addition of foreign genes to the crop is called
-
- (A) Genetic Engineering
- (B) Bio-craft arts science
- (C) Histological culture
- (D) Immunization
Answer: (A) Genetic Engineering
46. Transgenic bacteria are used to make
-
- (A) Epinephrine
- (B) Human insulin
- (C) Thyroxine
- (D) Cartisol
Answer: (B) Human insulin
47. Genetically modified brinjal has been developed in India
-
- (A) For insect resistance
- (B) To increase shelf life
- (C) to increase the amount of minerals
- (D) drought-resistance
Answer: (A) Insect – For resistance
48. Some characteristics of Bt cotton are
-
- (A) Resistance to long fibers and aphids
- (B) Medium yield, long fibers and resistance to Beatles
- (C) High production and formation of toxic protein particles that kill dipteran pests
- (D) high output and resistivity to ball square
Answer: (D) High output and resistivity to ball square
49. The process of RNA interference is being used for the development of resistant plants for which of the following?
-
- (A) Fungus
- (B) Virus
- (C) insect
- (D) Nematodes
Answer: (D) Nematodes
50. Renin used in cheese industry is
-
- (A) Antibiotics
- (B) Enzyme
- (C) Alkaloids
- (D) Inhibitor
Answer: (B) Enzyme
51. A compound produced by an organism. and inhibits the growth of other organisms is called
-
- (A) Antibody
- (B) Antigen
- (C) Alkaloids
- (D) Inhibitor
Answer: (B) Antigen
52. How to overcome adenosine deaminase deficiency?
-
- (A) by gene therapy
- (B) By making antibiotics
- (C) Human – by growth hormone
- (D) producing interferon
Answer: (A) Gene therapy
53. Bio-robbery is related to which of the following?
-
- (A) Conventional knowledge
- (B) Biomolecules and Bioresources, Extraction of genes from biological resources
- (C) Bioresources
- (D) all of the above
Answer: (D) All of the above
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Bihar board 12th science stream subjects wise solution
click here to check out Bihar board science stream all subjects solutions
| SL.N. | Subject name with solutions |
| 01 | Physics |
| 02 | Chemistry |
| 03 | Biology |
| 04 | Math |
| 05 | Hindi |
| 06 | English |