Asked: U.P.U.D.A./L.D.A. (Spl.) (Pre) 2010, U.P.P.C.S. (Pre) 2013medium Level
ID: 6aeba3c83b345304a2744da8
QUESTION STATEMENT:द्विभाषी / Bilingual
निम्नलिखित में से कौन-सा एक वायु प्रदूषण के जैविक सूचक का कार्य करता है?
Which one of the following acts as a biological indicator of air pollution?
SELECT CORRECT OPTION:
A
लाइकेन
Lichen
Correct
B
फर्न
Fern
C
मनी प्लांट
Money plant
D
अमरबेल
Cuscuta (Dodder)
Official Solution & Explanation:
Correct Answer: Option A(लाइकेन)
लाइकेन (Lichen) वायु प्रदूषण, विशेषकर सल्फर डाइऑक्साइड (SO2) प्रदूषण के प्रति अत्यधिक संवेदनशील होते हैं। प्रदूषित क्षेत्रों में लाइकेन नष्ट हो जाते हैं, अतः इन्हें वायु प्रदूषण का उत्कृष्ट प्राकृतिक जैव-सूचक माना जाता है।
Lichens serve as sensitive bioindicators of atmospheric quality because of their extreme vulnerability to sulfur dioxide; they disappear in polluted air.
Subject: Environment & Ecology•Topic: Pollution & Its Types•Subtopic: Air Pollution & Particulate Matter
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