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Thread: A certain cultivated herb

  1. #11
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    I'll go with E

  2. #12
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    histidine

    Expertssssss! Please please help resolve the confusion.

    If the concentration of histidine declines on maturity, that should mean that the plant starts to die whereas the agrument doesnt say so atall.

    My logic for picking up option D was:
    Since histidine makes the metal inert, so, once this particular herb is cultivated in the soil rich in toxic metal, the herb would turn the metal in soil inert making it fit for cultivation of other plants. So, I picked option D. Please tell me the flaw in my reasoning.

    thanks in advance.

  3. #13
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    I think its D. cultivation of the herb in soil with high concentrations of the metals will, over an extended period, make the soil suitable for plants to which the metals are toxic.

    One of the premise is:High concentrations of metals are toxic to most other plants. As per option D, over an extended period, the toxic effect of metals ceases to exist as histidine makes the metals INERT; now the detrimental cause for other plants no longer exists and they grow in that very soil. This validates the claim that "the herbís high histidine production is what allows it to grow in metal-rich soils"

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