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Free Download as PDF of the detailed solutions for class 12 Biology from NCERT or CBSE text book as per exam pattern, to help you in day to day learning. We provide all important questions and answers from chapter Biotechnology & its Applications of Biology.
(16)
DNA fingerprinting refer to
[1]
Techniques used for identification of fingerprints
of individuals
[2]
Molecular analysis of profiles of DNA samples
[3]
Analysis of DNA samples using imprinting devices
[4]
Techniques used for molecular analysis of different specimens of DNA
Answer: Molecular analysis of profiles of DNA samples
(17)
A genetically engineered microorganism used successfully in bioremediation of
oil spills is a species of
[1]
Trichoderma
[2]
Bacillus
[3]
Xanthomonas
[4]
Pseudomonas
(18)
In order to obtain virus free plants through tissue culture the best method is
[1]
meristem culture
[2]
protoplast culture
[3]
anther culture
[4]
embryo rescue
(19)
The production of secondary metabolites require the use of
[1]
protoplast
[2]
meristem
[3]
auxillary buds
[4]
cell suspension
(20)
DMSO (Dimethyl sulfoxide) is used as
[1]
Gelling agent
[2]
alkaylating agent
[3]
Chelating agent
[4]
Cryoprotectant
21
Callus is
[1]
Tissue that forms embryo
[2]
An insoluble carbohydrate
[3]
Tissue that grows to form embryoid
[4]
Un organised actively dividing mass of cells maintained in cultured
Answer: Un organised actively dividing mass of cells maintained in cultured
22
A medium which is composed of chemically defined compound is called
[1]
Natural media
[2]
Synthetic media
[3]
Artificial media
[4]
None of these
23
Somaclonal variations are the ones
[1]
Caused by mutagens
[2]
Produce during tissue culture
[3]
Caused by gamma rays
[4]
Induced during sexual embryogeny
Answer: Produce during tissue culture
24
The technique of obtaining large number of plantlet by tissue culture method is called
[1]
Plantlet culture
[2]
Micropropagation
[3]
Organ culture
[4]
Macropropagation
25
In tissue culture medium, the embryoids formed from pollen grains is due to
[1]
Organogenesis
[2]
Cellular totipotency
[3]
Double fertilization
[4]
Test tube culture
Answer: Cellular totipotency
26
Probiotics are
[1]
cancer inducing microbes
[2]
safe antibiotics
[3]
new kind of food allergens
[4]
live microbial food supplement
Answer: live microbial food supplement
27
First use of pure microbiological process in an industrial procedure was made by Chaim Weizmann in
[1]
1921
[2]
1925
[3]
1917
[4]
1907
28
Interdisciplinary field of biotechnology to address biological problems using computation techniques is known as
[1]
bioremediation
[2]
bioleaching
[3]
bioinformatics
[4]
biodegradation
29
Process of using natural bacteria in mining industry is known as
[1]
biodegradation
[2]
biogenomics
[3]
bioremediation
[4]
bioleaching
30
Application of biotechnology procedures in medical processes is classified as
[1]
white biotechnology
[2]
red biotechnology
[3]
blue biotechnology
[4]
green biotechnology
Answer: red biotechnology
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