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Biology Past Questions and Answers

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Waec Biology Questions

Question 836:

The function of the amniotic fluid in humans is to

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A Protect the foetus against shocks
B Remove waste products from the foetus
C Supply food and water to foetus
D Carry oxygen to the foetus

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Question 837:

Which of the following statements about water in humans is not correct? it

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A Plays an important role in temperature regulation
B Acts as solvent for substances conveyed around the body
C Plays a role in the formation of vitamin
D Is needed for many life processes

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Question 838:

In the test for starch, the leaf is first placed in boiling water to

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A Remove the chlorophyll
B Dissolved the waxy cuticle
C Kill and make the leaf permeable
D Turn it blue-black

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Question 839:

Which of the following groups of compounds are products of the light stage of photosynthesis? I. Ribulose bi-phosphate (RuBP) II. Nicotin amide di-phosphorous (NADPH₂) III. Oxygen (O ₂) IV. Adenosine Triphosphate (ATP)

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A I,II and lll
B L, lll and lV
C Ll,lll and lV
D L, ll, lll and IV

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Question 840:

Which of the following is considered to be the first product of photosynthesis?

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A Protein
B Energised chlorophyll
C Hydroxyl ions
D Starch

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