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Sunday, 21 June 2026
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Biology Past Questions and Answers

Topic: Internal structure of a flowering plant

Jamb Biology Questions - Internal structure of a flowering plant

Question 21:
A corn differs from a bulb in that
  • A Its stem is the main food storage organ
  • B It has a flattened discshaped stem
  • C Buds are absent in the axils of the leaves
  • D Adventitious roots are present
View Answer & Explanation
Question 22:
The first step in the process of photosynthesis is the
  • A Activation of the chlorophyll
  • B Photolysis of water
  • C Reduction of carbondioxide
  • D Formation of sugar
View Answer & Explanation
Question 23:
If a ring of bark and phloem is removed from a stem, the
  • A Plant dies immediately
  • B Plant dies after two days
  • C Movement of food is not affected
  • D Movement of minerals is hardly affected
View Answer & Explanation
Question 24:
Transpiration can be measured with a
  • A Photometer
  • B Hygrometer
  • C Potometer
  • D Barometer
View Answer & Explanation
Question 25:
Which of the following is formed immediately after the first product of photosynthesis?
  • A Lipid
  • B Starch
  • C Oxygen
  • D Sugar
View Answer & Explanation