Contents

……..is the loss of water from a plant surface in the form of vapors.
a) Transpiration                         
b) Transportation
c) Diffusion                  
d) Osmosis

a

The process which helps in drainage and aeration is called………
a) transpiration                   
b) erosion
c) tilling                                               
d) diffusion

c

Gaseous exchange in humans:


Human’s respiratory system is well adopted for the……….. mode of life.
a) aquatic                                             
b) terrestrial
c) aerial                                 
d) all of these


b

The human respiratory system is divided into ………..main components.
a) two                                    
b) three 
c) four                                   
d) five

a

Which of the following is/are the main component/s of human respiratory system?
a) lungs                         
b) air passageway
c) skin                                   
d) both a and b


d