Home › Maharashtra SSC (Class 10) › Biology › Cell Biology and Biotechnology › Why are herbicide tolerant crop varieties being …
Why are herbicide tolerant crop varieties being developed by genetic engineering?
ASo the crop needs no sunlight to grow
BSo the crop ripens before the rains arrive
CSo weeds can be killed without harming the main crop
DSo the crop produces its own water supply
Answer & Solution
Correct answer: C. So weeds can be killed without harming the main crop
1. Herbicides sprayed to kill weeds normally damage the main crop as well.
2. Herbicide tolerant varieties survive the herbicide, so weeds can be selectively destroyed without harming the crop.
3. These plants are not engineered for early ripening, light-free growth or self-watering, so the other options are wrong.
4. The light-free and water-producing options describe biological impossibilities and act as distractor traps.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology Part 2, Ch 8 "Cell Biology and Biotechnology", p.101_
Related questions
What is the best method of collecting honey that does not destroy the hive or kill large nThe phenomenon by which a pesticide like DDT enters the food web and increases in concentrIn hydroponics, crops are grown without soil with the help of:Why is organic farming preferred over the heavy use of chemical fertilisers and pesticidesThe large-scale production of useful aquatic organisms, promoted in India through the Nil-Dr. Verghese Kurien is best associated with which revolution that strengthened India's daiVarious methods used to obtain the maximum yield of food grains from minimum land, which sThe first cloned sheep, 'Dolly', was produced by introducing a nucleus from an udder cell