Which of the following elements are necessary for the formation of chlorophyll in a plant?
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1983
Which of the labelled part in the figure above will develop into new bulb?
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1983
Which of the following features can be used to identify the figure above?
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1983
Which of the following will not allow osmosis to take place
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1983
If an isolated living cell is left in distilled water for two hours, it is likely to
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1983
In a dicot leaf, guard cells differ from other epidermal cells because they
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1983
Root hairs are developed from the
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1983
If an organic compound has its hydrogen: oxygen ratio as 2:1, it is likely to be
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1983
Herbs differ from shrubs because they
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1983
Which of the following structure is NOT found in the female agama lizard?
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1983
The movement of plant in response to external stimulus of no particular direction is
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1983
The kidneys of all vertebrates act as osmoregulators. This means that they
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1983
Which of the following substance is not found in urine?
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1983
In woody plants, grass and water vapour are transported across the stems by the
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1983
Which of the following statements is NOT true of mammalian erythrocytes?
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1983
28 g soil sample was heated to a constant weight of 24 g. When further heated to red hot and cooled, it weighed 18 g. What is the percentage of humus in the soil?
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1983
What type of fruit is formed from a single flower having several carpels?
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1983
Groundnut is not really a 'nut' in the biological sense because
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1983
In the onion bulb, food is stored in the
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1983
The part of the mammalian brain responsible for maintaining balance is the