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NCERT Class 12 Biology Chapters
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1.
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The method of producing thousands of plants through tissue culture is called as:
(a) Somaclones (b) Micro-propagation
(c) Somatic hybridisation (d) Vegetative propagation
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2.
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Identify the gene which is not effective against cotton boll worms?
(a) cryIAb (b) cryIAc (c) cryIIAb (d) Both (b) and (c)
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3.
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Match List – I with List – II.
Choose the correct answer from the options given below:
(a) (A) – (I), (B) – (II), (C) – (IV), (D) – (III) (b) (A) – (III), (B) – (I), (C) – (II), (D) – (V)
(c) (A) – (II), (B) – (I), (C) – (IV), (D) – (III) (d) (A) – (V), (B) – (I), (C) – (IV), (D) – (II)
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4.
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Bt toxin produced by Bacillus thuringiensis is resistant to:
(a) Drought (b) Insects (c) Nematodes (d) Viruses
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5.
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The process of RNA interference (RNAi) was used in Tobacco plant to develop resistance against:
(a) Viruses (b) Fungi (c) Nematodes (d) Insects
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1.
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How is ‘somatic hybridization’ carried out? Mention one example of a somatic hybrid.
(CBSE 2019, 2M)
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2.
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List any four ways by which GMO’s have been useful for enhanced crop output.
(CBSE 2019, 2M)
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3.
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A corn farmer has perennial problem of corn-borer infestation in his crop. Being environmentally conscious he does not want to spray insectides. Suggest solution based on your knowledge of biotechnology. Write the steps to be carried out to achieve it.
(CBSE 2019, 2M)
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4.
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“RNA interference has been used to produce transgenic tobacco plants to protect them from the infestation by specific nematodes.” Explain the novel strategy exploited by the biotechnologists.
(CBSE 2023, 3M)
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5.
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An application of biotechnology in agriculture involves production of pest resistant plants using ‘cry’ genes from a bacterium. Name the bacterium.
Explain why the ‘cry’ gene kills the pest but not the bacterium itself.
(CBSE 2022, 3M)
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Chapter Name
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Sub Topics
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Biotechnology and Its Applications
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10.1 Introduction
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10.2 Genetically Modified Organisms (GMOs)
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10.3 Applications of Biotechnology in Agriculture
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10.4 Applications of Biotechnology in Medicine
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10.5 Gene Therapy and Its Significance
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10.6 Biopesticides and Biofertilizers
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10.7 Production of Recombinant Vaccines
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10.8 Environmental Applications of Biotechnology
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