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प्रश्न
Answer the following question.
List any four ways by which GMOs have been useful for enhanced crop output.
उत्तर
GMO's have been useful for enhanced crop output in different ways:
- genetically modified crops are more tolerant of abiotic stresses (cold, drought, salt, heat)
- These genetic modifications have helped to reduce post-harvest losses implying less damage to crop yield.
- Genetic modification has reduced reliance on chemical pesticides by creating pest-resistant crops. eg. Tobacco, leading to greater crop yield.
- The creation of insect-resistant crops such as Bt cotton and Bt corn has enhanced crop yield.
- Increased efficiency of mineral usage by GM plants prevents early exhaustion of fertility of soil resulting in increased yield.
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संबंधित प्रश्न
What happens when Meloidegyne incognitia consumes cells with RNAi gene?
In the following questions/statements has four suggested answers. Rewrite the correct answer
Bt cotton is resistant to:
(A) Insects
(B) Herbicides
(C) Salt
(D) Drought
In RNAi genes are silenced using ______.
Assertion (A): In Bt cotton, B. thuringiensis produces a toxic insecticidal crystalline protein which destroys bollworms.
Reason (R): B. thuringiensis produces this toxic protein in an inactive form, but when an insect ingests this inactive protein, it is converted into active form of toxin due to the alkaline pH of gut which solubilises the crystals, which is responsible for the death of bollworm.
Expand GMO. How is it different from a hybrid?
You have identified a useful gene in bacteria. Make a flow chart of the steps that you would follow to transfer this gene to a plant.
What are the various advantages of using genetically modified plants to increase the overall yield of the crop?
Explain with the help of one example how genetically modified plants can:
- Reduce usage of chemical pesticides
- Enhance nutritional value of food crops
Name an organism that produce cry proteins.
How has man exploited cry proteins to his benefit?
