Contents

In plants, the gaseous exchange between the plant and environment occurs through the…..
a) leaves surface                 
b) stem surface
c) petal surface                   
d) both a & b

d

In woody stem gaseous exchange through which part…………..
a) stomata                                           
b) bark
c) epidermis                         
d) cuticle

b

In woody stem gaseous exchange occurs through bark contain ……….
a) epidermis                         
b) cuticle
c) guard cells                        
d) lenticels

d

In leaves and young stem the gaseous exchange occurs through which part ………..
a) stomata                                           
b) bark
c) mesophyll                        
d) lenticels

a

The inner cells of leaves are called………
a) guard cells                      
b) mesophyll cells
c)cuticle                                                
d) stomata

b

Pores in the layer of bark are called……
a) epidermis                         
b) stomata
c) lenticels                                           
d) cuticle

c