O LevelBiologyCambridgeExam Questions6. Plant Nutrition6.3 Mineral Nutrition

Mineral Nutrition (Cambridge O Level Biology)

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6.3 Mineral Nutrition

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6.3 Mineral Nutrition

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11 mark

Plants growing in soil lacking magnesium ions have poor growth.

What causes their poor growth? 

  • They cannot form cellulose for new cell walls.

  • They cannot form chlorophyll for photosynthesis.

  • They cannot produce amino acids to form proteins.

  • They cannot take in mineral ions from the soil.

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1
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Which row of the table below shows the correct effects of deficiencies of essential minerals for plant growth?

  effect of magnesium ion deficiency effect of nitrate ion deficiency
A yellow leaves stunted growth
B stunted growth long roots
C small leaves yellow leaves
D stunted growth yellow leaves

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    21 mark

    A student grows young plants in four different test tubes. 

    Tube W contains all the mineral ions needed for healthy plant growth. 

    The diagram shows the appearance of the plants after two weeks.q2-6-3-mineral-nutrition-medium-mcq-cie-o-level-biology

    What do tubes X, Y and Z contain?

      X Y Z
    A all minerals except
    magnesium ions    		 all minerals except
    nitrate ions    		 water only
    B all minerals except
    magnesium ions    		 water only all minerals except
    nitrate ions
    C all minerals except
    nitrate ions    		 all minerals except
    magnesium ions    		 water only
    D water only all minerals except
    magnesium ions    		 all minerals except
    nitrate ions

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