Questions and answers for exam Preparation

MCQs

Total Questions : 107 | Page 8 of 11 pages

Question 71. . If the goal were to create a plant resistant to an insecticide, which cell-based plant technology would be most effective?

Clonal propagation
Cybridization
Protoplast fusion
Mutant selection

Discuss Question

Answer: Option D. -> Mutant selection

Question 72. . What are the various disadvantages of cross protection?

Possibility of mutations in inducing mild virus strain
Possibility of synergism between inducing virus and other unrelated virus
Possibility of unnecessary spread of mild virus
All of the above

Discuss Question

Answer: Option D. -> All of the above

Question 73. . Which of the following gene is transferred to plants that detoxify the herbicide atrazine?

Nitrilase
Glutathione S-transferase (GST)
Phosphinothrium acetyl transferase
All of these

Discuss Question

Answer: Option B. -> Glutathione S-transferase (GST)

Question 74. . Which cell-based plant technology involves the combining of two cells without cell walls from different species?

Clonal propagation
Cybridization
Protoplast fusion
Mutant selection

Discuss Question

Answer: Option C. -> Protoplast fusion

Question 75. . Which of the following self-pollinating plant/(s) tend to be homozygous?

Peas
Tomato
Peach
All of these

Discuss Question

Answer: Option D. -> All of these

Question 76. . Which of the following genes can be used for making resistances against viral infection?

Genes for capsid protein
Gene for nucleocapsid protein
Satellite RNA
All of these

Discuss Question

Answer: Option D. -> All of these

Question 77. . Which of the following has been widely used to provide resistance against plant viruses?

Virus resistance genes from bacteria
Expression of virus coat protein genes in transgenic plants
Expression of anti-virus genes in vectors that transmit viruses
Expression of ribonuclease (RNase) genes in host plants

Discuss Question

Answer: Option B. -> Expression of virus coat protein genes in transgenic plants

Question 78. . A naturally occurring variant, possessing characteristics of interest, is identified. This plant is selectively bred. This is an example of

traditional plant breeding
transgenic technology
mutant selection
none of these

Discuss Question

Answer: Option A. -> traditional plant breeding

Question 79. . Which of the following dies from Ti plasmid infection?

Rice
Corn
Sorghum
All of these

Discuss Question

Answer: Option D. -> All of these

Question 80. . Cross protection against viruses in transgenic plants can be obtained by

inoculating the susceptible strain of a crop with a mild strain of a virus that helps in developing resistance against more virulent strain
inoculating the susceptible strain with the coat proteins of virulent strain
inoculating the susceptible strain with genes of nucleocapsid
any of the above

Discuss Question

Answer: Option A. -> inoculating the susceptible strain of a crop with a mild strain of a virus that helps in developing resistance against more virulent strain