Q15 of 44 Page 1

GM plants are useful in many ways. How would you convince farmers to grow GM plants on their field ? Explain giving three reasons.

GM plants are genetically modified plants. Farmers can be convinced to grow GM plants on their fields because: Genetic modification has made crops more tolerant to abiotic stresses, has reduced dependence on chemical pesticides, helped to reduce post harvest losses, increased efficiency of mineral usage by plants as well as enhanced nutritive value of food, etc.


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(a) What is green revolution? Mention the steps that led to it.

(b) Name the scientist whose contribution led to development of semi-dwarf wheat varieties in India.


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Are humming birds and fish regulators or conformers ? Give reasons in support of your answer.

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Name the male accessory glands in humans and write their functions.

 17

Write in what context did Darwin use the terms ‘fitness’, ‘survival’ and ‘selection’ while elaborating on the mechanism of evolution.