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Biology Past Questions and Answers

Waec Biology Questions

Question 346:

The part of the ear which equalizes air pressure on either side of the eardrum is
the

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A Auditory meatus
B Malleus
C Eustachian tube
D Oval window
E Stapes

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Question 347:

Mutation leads to evolution in that it

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A Gives rise to offspring which have the same characteristics as the parents
B Kill all organism where it has occurred
C Gives rise to new individuals which differs considerably from their parents
D Always confers adaptability of the offspring
E Does nit confer adaptability to the offspring

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Question 348:

The process whereby poisonous compounds are made harmless in the liver is called

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A Deamination
B Glycolysis
C Dehydration
D Detoxification
E Denitritication

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Question 349:

The deficiency of calcium in a plant may result in

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A Stunted growth and poor root development
B Poor growth, leaves become orange or brown
C Stunted growth, slender stem and yellowing of leaves
D Very small leaves and yellowing of leaves
E Tall weedy and reddish leaves, `

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Question 350:

Which of the following is the least safe method of birth control? Using

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A Spermicide creams
B Contraceptive pills
C Barriers such as condoms
D Intrauterine device
E The withdrawal method

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