Give an example of a plant which came in india as a contaminant and is a cause of pollen allergy
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Answer:
Parthenium is the plant which came into India as a contaminant and is a cause of pollen allergy.
Explanation:
Parthenium is an annual herb of North america belongs to family Astraceae.
It was accidentally brought India While importing food grains.
Its introduction to India occurred in the years 1950's.
It is also a cause of pollen allergy.
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