Which of the following is the best indicator of SO2 pollution ?निम्नलिखित में से SO2 प्रदूषण का सबसे उत्तम सूचक कौन-सा है ?
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Correct answer: C. Lichenलाइकेन
Explanation
Lichens are very sensitive to sulphur dioxide and disappear from polluted areas, so they are the best bio-indicators of SO2 pollution.लाइकेन सल्फर डाइऑक्साइड के प्रति अत्यंत संवेदनशील होते हैं और प्रदूषित क्षेत्रों से लुप्त हो जाते हैं, इसलिए ये SO2 प्रदूषण के सर्वोत्तम जैव-सूचक हैं।More Environmental Studies (EVS) questions
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