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Biology Past Questions and Answers

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Biology Questions

Question 86:

A carbohydrate molecule in the blood in the right ventricles of the heart is pumped into the cell of the toe of a man. Which of these structure is it unlikely to pass through en-route

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A Pulmonary artery
B Lungs
C Heart
D Liver
E Aorta

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Question 87:

In a photo-tropic experiment, young seedlings in a box were subjected to light from one direction. The seedling continue to grow erect. Which of the following statement is correct

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A Only the tip of the seedling received the light
B The light was not strong enough
C The seedlings were rather too young
D The tip of the seedling may have been covered
E The box containing the seedling should have been placed on a laboratory bench

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Question 88:

Which of these is not a characteristics of a wind pollinated flowers?

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A A smaller quantities of sticky pollen produce
B Feathery styles of stigmas pendulously hang outrside the flower
C Small inconspicuous scentless flower
D Large anthers which are loosley attached to the filament
E Light pollen grains produced in large quantities from the anthers

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Question 89:

A germinating seed requires oxygen which is essential for

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A Converting carbonhydrate into glucose
B Transporting energy from part of the plant to another
C The production of energy by oxidising essential carbonhydrate
D Hydrolysis of protein
E The formation of water molecules within the germinating seed

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Question 90:

Which of these products obtained from analyzing sweat from skin is not an excretory product?

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A Water
B Salts
C Dust
D Urea
E Urates

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