Which of the following came to India as a contaminant with imported wheat
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → Parthenium
Option (2) Parthenium — Correct. Carrot grass came with imported wheat.
NCERT Extract:
Stamen, Microsporangium and Pollen Grain – “… Pollen grains of many species cause severe allergies and bronchial afflictions in some people often leading to chronic respiratory disorders – asthma, bronchitis, etc. It may be mentioned that Parthenium or carrot grass that came into India as a contaminant with imported wheat, has become ubiquitous in occurrence and causes pollen allergy.”