Plant Biotechnology MCQs | Page - 1

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M

Mr. Dubey • 52.33K Points
Coach 

Q. Plant breeders have an advantage over animal breeders in reproducing a desired type offspring because the plant breeders can employ

(A) Gene mutations
(B) Hybridization
(C) Clonal propagation
(D) Selection
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M

Mr. Dubey • 52.33K Points
Coach 

Q. For protoplast fusion to be successful in plant cells

(A) Fusion agents other than polyethylene glycol should be used
(B) Cell wall of the two strains of cells should not be damaged
(C) DNA between the two cells should be compatible
(D) Osmolarity of the medium is not important
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M

Mr. Dubey • 52.33K Points
Coach 

Q. Meristems escape virus invasion because

(A) Vascular system is absent in the meristem
(B) Of low metabolic activity in the meristem
(C) The 'virus inactivating system' has low activity in the meristem
(D) Of low endogenous auxin level
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M

Mr. Dubey • 52.33K Points
Coach 

Q. Somatic embryo from cotyledon explant would develop in the following sequential stages

(A) Cotyledonary → Heart → Globular → Torpedo
(B) Globular → Torpedo → Heart → Cotyledonary
(C) Globular → Heart → Torpedo → Cotyledonary
(D) Cotyledonary → Globular → Heart → Torpedo
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M

Mr. Dubey • 52.33K Points
Coach 

Q. Which one of the following is not a protoplast fusion inducing agent?

(A) Inactivated Sendai virus
(B) Ca2+ at alkaline pH
(C) Polyethylene glycol
(D) Colchicine
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M

Mr. Dubey • 52.33K Points
Coach 

Q. Enhanced axillary branching for multiple shoot production is promoted by

(A) 2, 4-D
(B) Abscisic acid
(C) Gibberellic acid
(D) Benzyl adenine
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M

Mr. Dubey • 52.33K Points
Coach 

Q. Shoot organogenesis by tissue culture results into

(A) A bipolar structure that has no vascular connection with the explant
(B) A monopolar structure that has a strong connection with the pre-existing vascular tissue of the explant
(C) A monopolar structure that has no vascular connection with the explant
(D) A bipolar structure that has a strong connection with the pre-existing vascular tissue of the explant
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M

Mr. Dubey • 52.33K Points
Coach 

Q. What would he the effect of addition of 2, 4-D on the production of berberine by cell culture of Thalictrum minus?

(A) To stimulate growth and thereby urease secondary metabolite production
(B) Stimulate dedifferentiation and thereby decrease secondary metabolite production
(C) Stimulate proliferation and reduce secondary metabolite production
(D) None of the above
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M

Mr. Dubey • 52.33K Points
Coach 

Q. Multiplication of genetically identical copies of a cultivar by asexual reproduction is known as

(A) Aclonal propagation
(B) Vegetative propagation
(C) Polyclonal propagation
(D) Clonal propagation
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M

Mr. Dubey • 52.33K Points
Coach 

Q. Which one of the following is a second generation genetically engineered crop?

(A) Bt brinjal
(B) Roundup soyabean
(C) Golden rice
(D) Bt rice
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