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Biology JAMB Past Questions

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421
Secondary thickening is initiated in a dicotyledonous stem by the
  • A. xylem parenchyma
  • B. secondary phloem
  • C. endodermis
  • D. cambium
View Answer & Discuss (1) JAMB 1987
422

In demonstrating the importance of mineral elements in plants, the culture bottle must be darkened to

  • A. prevent alga growth in culture solution
  • B. allow root growth
  • C. prevent breakdown of mineral elements
  • D. prevent photosynthesis in the root
View Answer & Discuss (17) JAMB 1987
423
The vitamin which is important in the formation of the retina pigment is
  • A. vitamin A
  • B. vitamin B
  • C. vitamin C
  • D. vitamin D
View Answer & Discuss (8) JAMB 1987
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424
Which of the following lists of organs is directly involved in nutrition?
  • A. Oesophagus, bronchus, stomach, pancreas and anus
  • B. spleen, pharynx, duodenum, jejunum and rectum
  • C. Teeth, oesophagus, ileum lungs and large intestine
  • D. Salivary gland, liver, stomach, villi and colon
View Answer & Discuss (11) JAMB 1987
425

In the standard experiment to show that oxygen is given off during photosynthesis, sodium bicarbonate is used to

  • A. neutralize the acid in water
  • B. supply mineral salt to water plant
  • C. supply carbondioxide for photosynthesis
  • D. kill micro-organisms in water
View Answer & Discuss (9) JAMB 1987
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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