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Biology WAEC Past Questions

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391
Which of the following conclusions
cannot be drawn from the graphs?
  • A. Ion is taken up more rapidly at suitable temperature
  • B. Suitable oxygen concentration increases ion uptake
  • C. Ion uptake requires energy from aerobic respiration of sugar
  • D. Ion uptake occurs most rapidly in adequate supply of, respiratory substrate
  • E. The quantity of ions absorbed is inversely proportional to the quantity of carbohydrate (sugar) synthesized.
View Answer & Discuss (4) WAEC 1995
392

The graphs above show the results of experiments which investigated the effect of temperature and oxygen on the rate of uptake of certain ions labelled X and Y by a plant root. Use them to answer the question

Which of the temperature ranges will likely favour the plant best?

  • A. 0 -10oC
  • B. 15.-20oC
  • C. 30- 40oC
  • D. 45 - 50oC
  • E. above 50oC
View Answer & Discuss (4) WAEC 1995
393
Which of the following is the correct chain for the organism found in an aquatic community?
  • A. Paramecium, Phytoplankton, Prawn, Waterflea, Tilapia, Shark
  • B. Waterflea, Paramecium, Phytoplankton, Prawn, Tilapia, Shark
  • C. Phytoplankton, Waterflea, Paramecium, Prawn, Shark, `tilapia
  • D. Phytoplankton, Paramecium, Waterflea, Prawn, Tilapia, Shark
  • E. Paramecium, Phytoplankton, Waterfiea, Prawn, Shark, Tilapia
View Answer & Discuss (3) WAEC 1995
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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394
In a food chain the position occupied by an organism is called
  • A. the trophic level
  • B. energy level
  • C. the feeding level
  • D. the habitat level
  • E. niche
View Answer & Discuss (4) WAEC 1995
395
Which of these statements about food chain is not correct?
  • A. Animals in the chain are consumers
  • B. A food chain usually begins with a green plant
  • C. All organisms in a food chain are animals
  • D. Living things are dependent on one another
  • E. The food chain involves energy transfer in an ecosystem
View Answer & Discuss (3) WAEC 1995
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts