Question
A crop plant has been genetically modified to make it resistant to herbicides.
Which is a possible disadvantage of introducing this new crop plant?
A Loss of weeds reduces competition.
B Some weeds might become resistant to the herbicide.
C The crop plant is unharmed and produces a higher yield.
D The new gene will appear in new generations of the crop.
Answer/Explanation
Ans: B
Question
What is a major contributor to the problem of worldwide famine?
A equal distribution of food
B increasing population and life expectancy
C large-scale monoculture of crop plants
D use of herbicides and insecticides in farming
Answer/Explanation
Ans
B
Question
Which method is used to produce lactose-free milk?
A filtering milk to remove lactose
B heating milk to break down lactose
C using lactase to break down lactose
D using lipase to denature lactose
Answer/Explanation
Ans: C
Question
What must always be available to allow seeds to germinate?
A carbon dioxide
B light
C mineral salts
D water
Answer/Explanation
Ans: D