Which of the following are alien invasive species?
A. Rauwolfia
B. Parthenium
C. Lantana
D. Clarias
Choose correct answer from options given below:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → B, C and D only
An alien (exotic) invasive species is a species brought into a new area, on purpose or by accident, that spreads there and harms the local species. It is the third cause of biodiversity loss in “The Evil Quartet”.
A. Rauwolfia — Incorrect. It is a medicinal plant that yields reserpine. It is not named as an invasive species.
B. Parthenium — Correct. Carrot grass came into India as a contaminant of imported wheat. It is now an invasive weed that causes pollen allergy.
C. Lantana — Correct. It is an invasive weed that harms native species.
D. Clarias — Correct. The African catfish Clarias gariepinus was brought in for aquaculture and threatens the local catfishes of our rivers.
NCERT Extract:
Loss of Biodiversity – …
