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A spirogyra cell placed was placed in solution X after 1 minute the cell has...

Biology
JAMB 1978

A spirogyra cell placed was placed in solution X after 1 minute the cell has been plasmolysed, solution X was

  • A. Tap water
  • B. a very strong sugar solution
  • C. a weak sugar solution
  • D. a very weak salt solution
  • E. distilled water
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Correct Answer: Option B
Explanation

When a plant cell is put in highly concentrated solution, it increases the pressure on the cell. Hence, plasmolysis holds in a highly concentrated solution.

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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
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 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
WAEC offline past questions - with all answers and explanations in one app - Download for free