Class XII · Biology practice
Biotechnology and its Applications PYQs Check your understanding, bookmark questions and revisit your mistakes.
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24 questions in this collection · Page 2 of 3
Biotechnology And Its Applications
Match the organism with its use in biotechnology.
(A)Bacillus thuringiensis
(I)Cloning vector
(B)Thermus aquaticus
(II)Construction of first rDNA molecule
(C)Agrobacterium tumefaciens
(III)DNA polymerase
(D)Salmonella typhimurium
(IV)Cry proteins
A (A)-(II), (B)-(IV), (C)-(III), (D)-(I) B (A)-(IV), (B)-(III), (C)-(I), (D)-(II) C (A)-(III), (B)-(II), (C)-(IV), (D)-(I) D (A)-(III), (B)-(IV), (C)-(I), (D)-(II)
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Biotechnology And Its Applications
Bt cotton variety that was developed by the
introduction of toxin gene of Bacillus thuringiensis
(Bt) is resistant to:
A Insect pests B Fungal diseases C Plant nematodes D Insect predators
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Biotechnology And Its Applications
Which of the following statements is not correct?
A In man insulin is synthesised as a proinsulin. B The proinsulin has an extra peptide called
C-peptide. C The functional insulin has A and B chains linked together by hydrogen bonds. D Genetically engineered insulin is produced in E-Coli.
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Biotechnology And Its Applications
RNA interference is used for which of the following
purposes in the field of biotechnology?
A to develop a plant tolerant to abiotic stresses B to develop a pest resistant plant against infestation by nematode C to enhance the mineral usage by the plant D to reduce post harvest losses
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Biotechnology And Its Applications
The laws and rules to prevent unauthorised exploitation of bio-resources are termed as:
A Biopatenting B Bioethics C Bioengineering D Biopiracy
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Biotechnology And Its Applications
Which of the following in true for Golden rice?
A It has yellow grains, because of a gene introduced
from a primitive variety of rice B It is drought tolerant, developed using
Agrobacterium vector C It is pest resistant, with a gene from Bacillus
thuringiensis
D It is Vitamin A enriched, with a gene from
daffodil
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Biotechnology And Its Applications
Given below are two statements:
A Both Statement I and Statement II are false B Both Statement I and Statement II are true C Statement I is false but Statement II is true D Statement I is true but Statement II is false
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Explanation: NCERT Page No.208,(Topic-12.1 BIOTECHNOLOGICAL APPLICATIONS IN AGRICULTURE)
Biotechnology And Its Applications
Which of the following are fused in somatic hybridization involving two varieties of plants?
A Somatic embryos B Callus C Pollens D Protoplasts
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Explanation: NCERT Page No.178,(Topic-10.1 BIOTECHNOLOGICAL APPLICATIONS IN
AGRICULTURE)
Biotechnology And Its Applications
The inactive form of Bt toxin is converted to the active form in the insect gut _______.
A Due to alkaline pH B Due to acidic pH C By proteases D By nucleases
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The Bt toxin exists as an inactive protoxin. The alkaline pH of the insect gut solubilises the crystals and converts the protoxin into its active form.
Biotechnology And Its Applications
Match List-I with List-II:
List-I List-II A. Genetically modified organism I. Agrobacterium tumefaciens B. Thermostable DNA polymerase II. Bt cotton C. Ti plasmid III. Thermus aquaticus D. pBR322 IV. Escherichia coli
A A-II, B-I, C-IV, D-III B A-II, B-III, C-I, D-IV C A-I, B-IV, C-III, D-II D A-I, B-II, C-IV, D-III
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Bt cotton is a genetically modified organism. Taq DNA polymerase is obtained from Thermus aquaticus . Ti plasmid is from Agrobacterium tumefaciens , while pBR322 is an E. coli cloning vector.
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