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Saturday, 15 August 2026
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Biology Past Questions and Answers

Topic: Sexual reproduction in flowering plants

Jamb Biology Questions - Sexual reproduction in flowering plants

Question 6:
The figure above is a section of a drupe. The part numbered 2 is
  • A Epicarp
  • B Endocarp
  • C Mesocarp
  • D Seed
  • E Pericarp
View Answer & Explanation
Question 7:
The filament of spirogyra were put into equal volumes of sugar solutions X and Y. After 5 minutes, filaments from solution X had their cells contents rounded up while those from Y were unaffected. The experiment shows that
  • A Solution X was stronger than Y
  • B Solution Y was stronger than X
  • C Spirogyra used up the sugar in solution X
  • D Solution X is good for stimulating sexual reproduction in Spirogyra
  • E Solution Y was less contaminated than X
View Answer & Explanation
Question 8:
Why is the part labelled 5 thicker than 6?
  • A 5 is the left ventricle and 6 the right ventricle
  • B 6 is the left ventricle and 5 the right ventricle
  • C 5 receives blood from the left auricle and 6 from the right
  • D 5 pumps blood round the body and 6 pumps blood into the lungs
  • E 5 deals with oxygenated blood and 6 deals with deoxygenated blood
View Answer & Explanation
Question 9:
The testa
  • A Is normally absent
  • B Is included in the part numbered (1)
  • C Is fused in the part numbered (3)
  • D Is the part numbered (1)
  • E Surrounds the part numbered (4) and (5)
View Answer & Explanation
Question 10:
The correct figure sequence for the following labeled parts (stigma, ovary wall, embryo sac, integument and micropyle) is
  • A 12453
  • B 24135
  • C 21435
  • D 14325
  • E 31425
View Answer & Explanation