True: Single -celled organisms do not need specialised gas exchange , Small organisms have large surface area to volume ratio, Metabolic demands of small organisms are low , In fish gas exchange takes place in the gills , False: It is easy to calculate the surface area to volume ratio of organisms, The bigger an organism gets the larger the surface area to volume ratio, Larger organisms have a lower metabolic rate, In plants most gas exchange takes place in the tracheal system,

Gas Exchange 1 - True or False?

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