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Swimming of a bacterium towards a chemical is termed

  • A.positive chemotaxis
  • B.negative chemotaxis
  • C.phototaxis
  • D.magnetotaxis

Answer: A

Correct answer: positive chemotaxis

Movement towards a chemical is positive chemotaxis; movement away from a repellent is negative chemotaxis. Phototaxis is a response to light and magnetotaxis to a magnetic field.

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