Increase in the carbon dioxide level in the outside air over the normal limit results in __________ in rate of transpiration.
increase
decrease
static
both a and b
The rate of transpiration will ________ with the decreases in atmospheric pressure.
decrease slowly
decrease rapidly
none of the above
Stomata participate in
transpiration
pollination
absorption
transportation
Special pore - bearing structures called _______ are present on the leaf margins for exudation.
stomata
ostia
hydathodes
none of these
In which condition the transpiration pull is maximum?
Open stoma, dry atmosphere and moist soil
closed stomata, dry atmosphere and moist soil
closed stoma, dry atmosphere
open stoma, high humid atmosphere and dry soil
"The openings on the stem through which transpiration occurs"
lenticels
Guard cells help in
protection against grazing
guttation
fighting against infection
The most effective method of elimination of excess of water from the plant body is by
evaporation
all of the above
If the rate of transpiration becomes more than the rate of photosynthesis, plants will
continue to live, but will not be able to store food
be killed instantly
grow more vigorously because more energy will be available
stop growing and gradually die of starvation
Maximum transpiration occurs through the
stem
root
flowers
leaves
