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In an ecosystem one species inhibits by another species by releasing noxious or toxic substance is known as :

  • A.Chelation
  • B.Allelopathy
  • C.Mesocosms
  • D.Microcosm

Answer: B

The inhibition of one species by toxic substances released by another is allelopathy.

Allelopathic plants release chemicals from their roots, leaves or decaying litter that suppress the germination or growth of neighbouring plants. Black walnut, which releases juglone, and Parthenium are well-known examples.

Chelation is the binding of metal ions by organic molecules. Microcosms and mesocosms are small and medium-sized experimental ecosystems used in research, not interactions between species.

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