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Carrot grass, Parthenium, came to India as a contaminant with imported:
ARice
BCotton
CSugar
DWheat
Answer & Solution
Correct answer: D. Wheat
1. Parthenium is now found everywhere in India.
2. It causes pollen allergy.
3. It arrived mixed with imported wheat.
_Source: NCERT Class 12 Biology, Chapter 2, Sexual Reproduction in Flowering Plants._
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