This set of Agricultural Biotechnology Multiple Choice Questions & Answers (MCQs) focuses on “Genetic Engineered Resistance against Pest”.
1. How many methods are available for plant production using pest resistance?
a) 2
b) 3
c) 4
d) 5
View Answer
Explanation: Two major approaches have been developed for transgenic plant production with pest resistance properties. The first one includes introduction of protein delta endotoxins and the second one includes introduction of protease inhibitors in plants.
2. Which legume compound is used to demonstrate the insecticidal property of Acanthosclides obtectus?
a) Pectosans
b) Heteropolysaccharide
c) Polysaccharide
d) Arcelin
View Answer
Explanation: Different secondary compounds are used from legume seeds that demonstrate insecticidal properties. Using these facilities, transgenic plants with insect resistance due to secondary metabolites can be produced.
3. The cystalline protein is toxic to mosquitoes.
a) True
b) False
View Answer
Explanation: The cystalline protein toxin is produced by Bacillus thuringiensis. It is toxic to larval stage of many mosquitoes. It is also toxic to black fly species.
4. _________ organism can kill black cutworm.
a) Helothis virescens
b) Spodoptera littoralis
c) Manducta sexta
d) Pseudomonas flurescens
View Answer
Explanation: Scientists have genetically engineered Pseudomonas flurescens. It lives in the roots of corn plants. This bacterium can secrete B.t-toxin to kill black cutworm.
5. High pH is necessary for the production of toxin by Bacillus thuringiensis.
a) True
b) False
View Answer
Explanation: The entomocidal bacterium Bacillus thuringiensis, upon sporulation produces a parasporal crystalline toxin. When ingested by a susceptible insect, a combination of the high pH and proteinases of the insect midgut solubilizes the crystal and yields active toxin.
Sanfoundry Global Education & Learning Series – Agricultural Biotechnology
To practice all areas of Agricultural Biotechnology, here is complete set of 1000+ Multiple Choice Questions and Answers.
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