Download PDF
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.
(1)
Who is the father of tissue culture?
[1]
Bonner
[2]
Haberlandt
[3]
Laibach
[4]
Gautheret
(2)
Hormone pair required for a callus to differentiate are
[1]
auxin and cytokinin
[2]
auxin and ethylene
[3]
auxin and absiccic acid
[4]
cytokinins and gibberllin
Answer: auxin and cytokinin
(3)
Cybrids are produced by
[1]
Fusion of two different nuclei from two different species
[2]
Fusion of two same nuclei from same species
[3]
Nucleus of one species but cytoplasm from both the parent species
[4]
None of the above
Answer: Nucleus of one species but cytoplasm from both the parent species
(4)
Part of plant used for culturing is called
[1]
Scion
[2]
Explant
[3]
Stock
[4]
Callus
(5)
To obtain haploid plant, we culture
[1]
Entire anther
[2]
Nucleus
[3]
Embryo
[4]
Apical bud
(6)
Which vector is mostly used in crop improvement?
[1]
Plasmid
[2]
Cosmid
[3]
Phasmid
[4]
Agrobacterium
(7)
Golden rice is a transgenic crop of the future with the following improved trait
[1]
Insect resistance
[2]
High protein content
[3]
High vitamin A content
[4]
High lysine content
Answer: High vitamin A content
(8)
Maximum application of animal cell culture technology today is in the production
of
[1]
Insulin
[2]
Interferons
[3]
Edible proteins
[4]
Vaccines
(9)
Two bacteria found to be very useful in genetic engineering experiments are
[1]
Nitrobacter and Azotobacter
[2]
Rhizobium and Diplococcus
[3]
Nitrosomonas and Kliebsiella
[4]
Escherichia and Agrobacterium
Answer: Escherichia and Agrobacterium
(10)
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
(11)
Which of the following plant cell will show totipotency?
[1]
Xylem vessels
[2]
Sieve tube
[3]
Meristem
[4]
Cork cells
(12)
Growth hormone producing apical dominance is
[1]
Auxin
[2]
Gibberellin
[3]
Ethylene
[4]
Cytokinin
(13)
The most widely used chemical for protoplast fusion, as fusogens, is
[1]
Manitol
[2]
Sorbitol
[3]
Mannol
[4]
Poly ethylene glycol (PEG)
Answer: Poly ethylene glycol (PEG)
(14)
Synthetic seed is produced by encapsulating somatic embryo with
[1]
sodium chloride
[2]
sodium alginate
[3]
sodium acetate
[4]
sodium nitrate
(15)
What is true for monoclonal antibodies?
[1]
These antibodies obtained from one parent and for one antigen
[2]
These obtained from many parents and for many antigens
[3]
These obtained from different parents and for one antigen
[4]
These obtained from one parent and for many antigens
Answer: These obtained from different parents and for one antigen
Take Mock Tests
Chapters