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Biology Past Questions and Answers

Waec Biology Questions

Question 281:

The following are features of Northern Guinea Savanna except

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A Presence of tall trees with thick bark
B Bare soil with very few trees
C Presence of fire-resistant trees
D Abundant herbivores
E Predominance of woody trees.

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Question 282:

Which of the following explains the term pyramid of numbers?

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A The number of organisms in a trophic level
B The relationship between plants in different trophic levels
C The number of saprophytes and parasites in a habitat
D The number of predators in a habitat
E Progressive decrease in the number of individuals from lower to higher trophic level

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Question 283:

In which of the following processes is carbondioxide not given out?

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A Respiration in plants
B Decay of organism
C Burning of organic matter
D Burning of fuels
E During photosynthesis.

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Question 284:

Sea water taken in by a living organism can be recycled into the atmosphere through all the following
processes except

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A Transpiration
B Digestion
C Excretion
D Respiration
E Decay

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Question 285:

Which of the following water pollutant may contain organisms that cause dysentery?

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A Pesticides
B Sewage
C Industrial wastes
D Fertilizers
E Crude oil.

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