CO2 is diffused from the outside air into the intercellular space by…..
a) stomata
b) roots
c) xylem
d) phloem
Stomata are small pores particularly present in the……
a) roots
b) stem
c) upper side of leaf
d) lower side of leaf
Each stoma is guarded by two……..cells.
a) guard
b) companion
c) epidermal
d) mesophyll
Where the exchange of CO2 and oxygen takes place leaf?
a) intracellular space
b) intercellular space
c) inside the inside the midrib
d) all of these
After diffusion, CO2 attaches to the wet surface of……….cells.
a) guard
b) companion
c) epidermal
d) mesophyll
In which reaction step of photosynthesis, CO2 molecule is reduced?
a) light reaction
b) Calvin cycle
c) both of them
d) none of them
