Transpiration pull and cohesion of water theory of ascent of sap was first proposed by,
Dixon
Jolley
Dixon and Jolley
Sachs
Which one of the following plants is the tallest angiosperm?
Sequoia sempervirens
Australian Eucalyptus
Ficus bengalensis
Pine tree
The cells that are full of water and rigid are called
support cells
flaccid
turgid
none of these
The ascent of sap in plants takes place due to
root pressure
transpiration pull
both a and b
osmosis
Ascent of sap in higher plant takes place through,
Xylem
Phloem
Parenchyma
None of these
Root pressure can be measured by,
Ganong's potometer
Psychrometer
Mercury Manometer
All of above
Main force for ascent of sap in higher plants is
Root pressure
Transpiration pull
Atmospheric pressure
Capillary force
Stomata are present on the __________ of the leaves.
upper surface only
lower surface only
mostly upper surface
mostly lower surface
The roots absorb water through
epidermal hairs
root hairs
root xylem
root phloem
The transport of water in plants occurs by the process of ______
transpiration
ascent of sap
guttation