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Biology Past Questions and Answers

Topic: Tropic, tactic, nastic, and sleep movements in plants

Jamb Biology Questions - Tropic, tactic, nastic, and sleep movements in plants

Question 1:
JAMB 2019
In a photo-tropic experiment, young seedlings in a box were subjected to light from one direction. The seedling continue to grow erect. Which of the following statement is correct
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  • A The light was not strong enough
  • B The tip of the seedling may have been covered
  • C Only the tip of the seedling received the light
  • D The seedlings were rather too young
  • E The box containing the seedling should have been placed on a laboratory bench
View Answer & Explanation
Question 2:
JAMB 1978
In a photo-tropic experiment, young seedlings in a box were subjected to light from one direction. The seedling continue to grow erect. Which of the following statement is correct
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  • A Only the tip of the seedling received the light
  • B The light was not strong enough
  • C The seedlings were rather too young
  • D The tip of the seedling may have been covered
  • E The box containing the seedling should have been placed on a laboratory bench
View Answer & Explanation
Question 3:
JAMB 1981
Which of the following instruments is used to demonstrate the response of roots and shoots to gravity?
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  • A Klinostat
  • B Manometer
  • C Porometer
  • D Potometer
  • E Photometer
View Answer & Explanation
Question 4:
JAMB 1986
Nastic movement is
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  • A Response to light stimulus
  • B Non-directional
  • C Directional
  • D Response to internal stimulus
View Answer & Explanation
Question 5:
JAMB 1986
An instrument that can be used to demonstrate phototropism and geotropism in plants is the
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  • A Auxanometer
  • B Potometer
  • C Klinostat
  • D Photometer
View Answer & Explanation

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