Biology Practice Test – Nutrient Cycling In Nature (Questions with Answers and Explanations)

Hello and Welcome to Biology Practice Test - Nutrient Cycling In Nature

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6CO2 + 6H2O → C6H12O6 + 6O2

The oxygen given off during the process in the equation above is derived from ______

A. sunlight
B. water
C. carbon dioxide
D. atmosphere


Denitrifying bacteria in nature liberate gaseous nitrogen directly from _______ (JAMB 1984)

A. ammonium salts
B. soil nitrates
C. thunderstorms
D. soil nitrites


Green plants lose water to the atmosphere through the process of _______ (WASSCE 2004)

A. respiration
B. photosynthesis
C. transpiration
D. translocation.


The water cycle is maintained mainly by _____ (JAMB 2012)

A. evaporation of water in the environment
B. evaporation and condensation of water in the environment
C. condensation of water in the environment
D. transpiration and respiration in plants.


In a community, bacteria and fungi are referred to as ______ (JAMB 1986)

A. producers
B. decomposers
C. scavengers
D. consumers.

 

 

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