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Biology 1990 WAEC Past Questions

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16
Different tissues in plants contribute to the support of the parts as a result of the following characteristics
except
  • A. malleability
  • B. rigidity
  • C. flexibility
  • D. resilience
  • E. hardness
View Answer & Discuss (2) WAEC 1990
17
Water vapour is lost in plants during transpiration through
  • A. stomata and lenticels
  • B. xylem and stomata
  • C. sclerenchyma and stomata
  • D. parenchyma and lenticels
  • E. guard cells and lenticels
View Answer & Discuss WAEC 1990
18

Gaseous exchange takes place in the adult toad through the

  • A. buccal cavity, bladder and lungs
  • B. buccal cavity, skin and lungs
  • C. tympanic membrane, lungs and gills
  • D. buccal cavity, skin and spiracle
  • E. gills skin and buccal cavity
View Answer & Discuss (1) WAEC 1990
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19
Breathing movement in mammals is accompanied by regular movements of the diaphragm and the
  • A. intercostal muscles
  • B. vertebral column
  • C. clavicle
  • D. pleural cavity
  • E. floating ribs
View Answer & Discuss WAEC 1990
20
Which of the following are components of glomerular filtrate?
  • A. All the components of Blood except mineral salts
  • B. Water and salt only
  • C. All the components of blood except plasma protein and cells
  • D. Plasma proteins, red and white blood cells
  • E. Blood cells, amino acid, salts and nitrogenous wastes.
View Answer & Discuss (2) WAEC 1990
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