Mainly conduction of water in an angiosperm occurs through
tracheids
xylem vessels
sieve tubes
All of these
The spraying of phenyl mercuric acetate in leaves
increases transpiration
reduces transpiration
increases rate of photosynthesis
causes guttation
If turgidity of a cell surrounded by water increases, the wall pressure will
increase
decrease
fluctuate
remain unchanged
The water potential and osmotic potential of pure water are
100 and zero
zero and zero
100 and 200
zero and 100
The direction and rate of water movement from cell to cell is based on
WP
TP
DPD
incipient plasmolysis
Water enters a cell due to
OP
SP
In a terrestrial habitat which of the following is affected by temperature and rainfall condition ?
Translocation
Transpiration
Transformation
Thermodenaturation
Two cells A and B are contiguous. Cell A has osmotic pressure 10atm, turgor pressure 7 atm and diffusion pressure deficit 3 atm. Cell B has osmotic pressure 8 atm, turgor pressure 3 atm and diffusion pressure deficit 5 atm. The result will be
movement of water from cell B to A
no movement of water
equilibrium between the two
movement of water from cell A to B
Stomata of a plant open due to
influx of hydrogen ions
influx of calcium ions
influx of potassium ions
efflux of potassium ions
Root system in a plant is well developed
due to deficiency of auxins
due to deficiency of cytokinins
due to deficiency of minerals
for increased absorption of water
