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The diagram above is an illustration of an ecological instrument used in a habitat. Study...

Biology
WAEC 2025

The diagram above is an illustration of an ecological instrument used in a habitat. Study it and answer question below.

The ecological instrument is 

  • A. wind vane
  • B. six's thermometer
  • C. secchi disc
  • D. hygrometer
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Correct Answer: Option C
Explanation

A Secchi disc is a simple, circular tool used to measure water transparency or turbidity in oceans, lakes, and ponds. 

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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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