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Which of the following plants can grow in a pH range of 5-5.5?

(a) Rhododendrons

(b) Cactus

(c) Tagetes

(d) China rose

This question was posed to me by my school principal while I was bunking the class.

My question is taken from Management of Alkali Soil topic in division Management and Remediation of Problem Soil of Environmental Biotechnology

1 Answer

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The correct option is (a) Rhododendrons

Easy explanation: Rhododendrons can successfully thrive in the acid pH and grow in the range of 5-5.5, whereas Tagetes and China rose garden plants grow at 6.5 pH, cactus grow in alkaline conditions.

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