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Biology Past Questions and Answers

Jamb Biology Questions

Question 6:

Which of the following elements are necessary for the formation of chlorophyll in a plant?

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A Magnesium and iron
B Calcium and potassium
C Calcium and sulphur
D Potasium and sulphur
E Phosphorus and potassium

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Question 7:

Which of the following statements is NOT true of mammalian erythrocytes?

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A They have haemoglobin
B They appear yellow when looked at singly
C They are disc shaped
D The cell are more numerous than leucocytes
E They have nuclei at maturity

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Question 8:

In woody plants, grass and water vapour are transported across the stems by the

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A Xylem fibres
B Medullary rays
C Sieve tubes
D Phloem fibres
E Phloem parenchyma

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Question 9:

Which of the following substance is not found in urine?

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A Water
B Sodium chloride
C Nitrogenous compounds
D Calcium chloride
E Nitrogenous salts

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Question 10:

The kidneys of all vertebrates act as osmoregulators. This means that they

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A Keep the composition of the plasma constant
B Regulate osmotic processes
C Control the volume of blood entering the kidneys
D Decrease the osmotic pressure of the blood
E Increase the osmotic pressure of blood

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