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  9. Q7

JKPSC KAS 2021 · Question 7 of 96

Considering the following pairs — Name of the species / Metal: Thlapsi caerulescens – Zn; Psychotria douarrei – Ni; Eichhornia crassipes – Cr; Astragalus preussi – Fe. Which of the above pairs are correctly matched based on the hyperaccumulation potential of specific metal?

Environment & Ecology

  1. A1 and 2 onlyCorrect
  2. B1 and 3 only
  3. C2 and 3 only
  4. D2 and 4 only

Answer: A. 1 and 2 only

Explanation

Thlaspi caerulescens is a classic zinc hyperaccumulator and Psychotria douarrei a nickel hyperaccumulator; water hyacinth and Astragalus preussi are not classified as hyperaccumulators of Cr and Fe respectively.

Source: JKPSC KAS Prelims 2021 GS via gkscientist.com

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