Which of the following scientists gave vital theories of ascent of sap in plants?
Godlewski
Strasburger
Bose
All the above
Water rises in xylem in the form of
Continuous water column
Discontinuous water column
Water vapours
None of these
Transpiration takes place from
all parts of the plant
leaves
only the aerial parts
stem
The ascent of sap in plants takes place due to
root pressure
transpiration pull
both a and b
osmosis
Most of the transpiration takes place through
stomata
lenticels
cuticle
epidermis
Cohesive force of water is due to presence of,
Hydrogen bonds between water molecules
Covalent bonds between water molecules
Hydrogen bonds between water and components of xylem walls
The cells that are full of water and rigid are called
support cells
flaccid
turgid
none of these
The conduction of soluble materials from one part of the plant to another.
transpiration
translocation
guttation
assimilation
_________ and _________ are non living plant tissues which help in conducting water and minerals dissolved in water from roots to upper parts of the plant.
Xylem vessels, Tracheids
Pholem vessels, Sieve tubes
Aerenchyma , Sclerenchyma
Collenchyma and Parenchyma
In the absence of transpiration, water moves into and up xylem because of
turgor pressure
high soil mineral concentration
low soil mineral concentration
