Which of the following weed has become a major cause of pollen allergy in India ?

Options

A. Mirabilis
B. Myosotis
C. Parthenium
D. Pistia

Answer

C

Explanation

Parthenium is a invasive species in India, and its is also known as carrot grass or congress grass which is the major cause of allergy in India, the parthenium weed produces as much as 3,000 million pollen grains per square meter during the flowering season.