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Biology 2011 WAEC Past Questions

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NECO offline past questions - All questions, answers & explanations in one app 25712
26

The process whereby electrons are emitted from chlorophyll and returned to it unchanged is known as?

  • A. non-cyclic phosphorylation
  • B. photochemical reaction
  • C. photophorylation
  • D. cyclic photophorylatlion
View Answer & Discuss (2) WAEC 2011
27
Which of the following statements about photosynthesis is not true?
  • A. Plants can photosynthesize without an increase in dry weight
  • B. Carbon dioxide is absorbed by the leaves in bright light
  • C. oxygen is produced during photosynthesis from the breakdown of water
  • D. Photosynthesis occurs in green plants
View Answer & Discuss (2) WAEC 2011
28
The removal of all the phloem tissues of the stem of a plant close to the root system for a long period of time is likely to
  • A. provide more energy to the roots
  • B. accumulate more starch in the roots
  • C. cause the underground roots to develop buds
  • D. cause the p ant to wither and die
View Answer & Discuss (6) WAEC 2011
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29
Which of the following groups of substances are not six-carbon compounds?
  • A. Glucose and lactose
  • B. Lactose and cellulose
  • C. Glucose, Lactose and Pyruvate
  • D. Pyruvate and cellulose
View Answer & Discuss (3) WAEC 2011
30
The conversion of glucose to starch in the leaf during the day principally
  • A. enables photosynthesis
  • B. prevents osmotic problems
  • C. enables the leaf to store the starch
  • D. enables glucose to be used up
View Answer & Discuss (3) WAEC 2011
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