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The movement of part of a plant in response to external stimulus of no particular...

Biology
JAMB 2021

The movement of part of a plant in response to external stimulus of no particular direction is?

  • A. taxism
  • B. tropism
  • C. haptotropic movement
  • D. nastic movement
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Correct Answer: Option D
Explanation

Taxism: oriented movement of a motile organism in response to an external stimulus, as toward or away from light.

A tropism is a biological phenomenon, indicating growth or turning movement of a biological organism, usually a plant, in response to an environmental stimulus.

 In tropisms, this response is dependent on the direction of the stimulus.

The movement or directional growth of plants or plant organs (as the tendrils of climbing plants) in response to the stimulus of touch.

The non-directional movement (of plants) in response to a stimulus (e.g. humidity, temperature, light irradiance, nutrients, gravity, etc.

There is an explanation video available below.


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Explanation Video

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