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In demonstrating the importance of mineral elements in plants, the culture bottle must be darkened...

Biology
JAMB 2021

In demonstrating the importance of mineral elements in plants, the culture bottle must be darkened to?

  • A. prevent algal growth in culture solution
  • B. allow root growth
  • C. prevent breakdown of mineral elements
  • D. prevents photosynthesis in the root
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Correct Answer: Option A
Explanation

Always use a completely opaque water storage tank - Algae uses photosynthesis to reproduce 

There is an explanation video available below.

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Explanation Video

WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
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WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995