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Give two reasons as to why a weed such Calotropis flourishes in abandoned fields.
Answers (1)
(i) Weed such as calotropis flourishes in abandoned fields as the plant produces highly poisonous cardiac glycosides such that no cattle or goats are seen browsing on the plant.
(ii) A wide variety of chemical substances (nicotine, caffeine, quinine, strychnine, opium, etc.) are produced by them as a defense against grazers and browsers.
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