Which of the following is correctly matched?
Answer: (C) Parthenium hysterophorus – Threat to Biodiversity. Answer: (C) Parthenium hysterophorus – Threat to Biodiversity.
- A.Aerenchyma – Opuntia
- B.Age pyramid – Biome
- C.Parthenium hysterophorus – Threat to Biodiversity✓
- D.Stratification – Population
Correct Answer
(C) Parthenium hysterophorus – Threat to Biodiversity
Solution & Explanation
Answer: (C) Parthenium hysterophorus – Threat to Biodiversity. Solution: Parthenium (carrot grass) is named in NCERT as an invasive alien weed that threatens native species—one of the Evil Quartet causes of biodiversity loss—so the pairing is correct. The other options are wrong pairings drawn from other chapters: aerenchyma belongs to hydrophytes (not the desert cactus Opuntia), age pyramids and stratification relate to populations/communities, not biome/population in the manner paired. NCERT: NCERT Class XII Biology, Ch 13 Biodiversity and Conservation, p.223, lines 15–17: "threat posed to our native species by invasive weed species like carrot grass (Parthenium), Lantana and water hyacinth (Eicchornia)."