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Solution


Q.

Which of the following is correctly matched                     [2016]
1 Aerenchyma – Opuntia  
2 Age pyramid – Biome  
3 Parthenium hysterophorus – Threat to biodiversity  
4 Stratification – Population  

Ans.

(3)

Parthenium hysterophorus is commonly known as congress grass or carrot weed. It is herbaceous annual plant of Family Asteraceae. It is a deadly invasive, noxious weed infesting cropped and non-cropped areas. It rapidly colonises area replacing the native vegetation and causes a number of human health related problems such as skin allergy, rhinitis and eye irritations. Also, being toxic and unpalatable it causes fodder scarcity. Hence, it is considered a threat to the biodiversity.