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Wednesday, 06 May 2026
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Biology Past Questions and Answers

Jamb Biology Questions

Question 1186:
When specimen X is mixed with few drops of iodine solution, the appearance of a blue-black colour confirms that X is
  • A Galactose
  • B Starch
  • C Sucrose
  • D Glucose
View Answer & Explanation
Question 1187:
The structure above represents a
  • A Caudal vertebra
  • B Lumbar vertebra
  • C Thoracic vertebra
  • D Cervical vertebra
View Answer & Explanation
Question 1188:
Blood vessel usually pass through the structure labelled
  • A III
  • B II
  • C V
  • D IV
View Answer & Explanation
Question 1189:
Salts and water are absorbed in the roots and transported to leaves by
  • A Diffusion through the xylem tissues
  • B Osmosis through the phloem tissues
  • C Diffusion through the phloem tissues
  • D Osmosis through the xylem tissues
View Answer & Explanation
Question 1190:
The number of plants species obtained from a population study of a garden is as follows: Guinea grass (15), Ipomea spp (5), sida spp (7) and Imperata spp (23). What is the percentage of occurrence of Imperata spp?
  • A 35%
  • B 16%
  • C 46%
  • D 23%
View Answer & Explanation