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Which of the following is a method of phytoextraction for removal of metals?

(a) Absorption by plant roots

(b) Absorption by water

(c) Absorption by soil

(d) Absorption by weathered rock

This question was posed to me in semester exam.

This intriguing question comes from Microbes in Metal Containing Habitat topic in chapter Microbial Transformation of Heavy Metals of Environmental Biotechnology

1 Answer

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Best answer
Right choice is (a) Absorption by plant roots

To elaborate: Absorption by plant roots is the technique used in phyto-extraction for removal of metals by absorbing the heavy metals by the roots, thereby, removing it from the immediate environment, whereas, absorption by water, soil and weathered rocks cannot remove metals from the environment.

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