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Biology Past Questions and Answers

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Biology Questions

Question 621:

In an ecosystem, the LEAST efficient energy transfer link is from

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A Producers to primary consumers
B Sun to producers
C Primary consumers to secondary consumers
D Secondary consumers to decomposers

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Question 622:

Lichen is an example of

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A Saprophytic organism
B A symbiotic association
C An epiphytic plant
D A carnivorous plant

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Question 623:

A physiological adaptation of plants to the problem of excessive water loss is

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A Reduction in the number of stomata
B Reversal of the normal stomatal rythm
C Possession of shallow roots
D Ppossession of waxy curticle

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Question 624:

which of the ways of controlling bilharzia can result in pollution?

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A Clearing water weeds on which the snail feed
B Treating infected people with drugs
C Preventing contamination of water by infected urine and faeces
D Applying chemical to kill the snails

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Question 625:

which of the following disease can be caused by a bacterium?

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A Ringworm
B Poliomyelitis
C Malaria
D Syphilis

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