Potometer measures
guttation
plant growth
transpiration
root pressure
In chloroplasts, the chlorophyll is present in
stroma
thylakoids
outer membrane
inner membrane
Which of the following is not an exchange process?
osmosis
diffusion
active transport
surface tension
Root pressure is due to
active absorption
passive absorption
increase in transpiration
decrease in transpiration
At incipient plasmolysis, water potential (Yw ) is equal to
YS
YS+YP
YP+Ym
Ys + YP + Ym
When the fluid outside a cell has a greater concentration of a given molecule than the fluid inside the cell, the external fluid is
isotonic
hypotonic
hypertonic
both '1' and '2'
DPD is equal to
OP
TP
OP + TP
OP - TP
Which of the following is the initiating step in photosynthesis ?
ATP formation
glucose formation
photolysis of water
activation of chlorophyll by sunlight
The rate of transpiration increases by
high humidity
wetness in soil
high temperature
low wind velocity
The phenomenon of osmosis was discovered by
Sachs
Nollet
Pffefer
Strasburger
