Contents

Due to transpiration, which of the following cells remain moist?
a) epidermal                        
b) collenchymas
c) mesophyll                       
d) xylem

c

Exchange of gases in plants occurs in ………
a) epidermal                        
b) collenchymas
c) mesophyll                       
d) xylem

c

The harmful effect of transpiration in plants is
a) loss of salts                      
b) loss of oxygen
c) loss of water (wilting)     
d) loss of CO2

c

Which of the following process is said to be a necessary evil?
a) respiration                       
b) photosynthesis
c) transpiration                  
d) excretion

c

The harmful effect of Eucalyptus trees is that; it
a) reduce CO2                      
b) reduce O2
c) reduce underground water
d) all of these

c



Transportation of Water: