Which of the following scenarios would result in the LEAST efficient water absorption by a plant's roots?
Slightly acidic soil with optimal nutrient availability
Well-aerated soil with moderate water content
Low soil temperature coupled with high humidity
High soil salinity coupled with low soil oxygen levels
Related Questions
ย ย ย ย In symplast pathway of water movement, water passes from cell to cell, whose cytoplasm are connected through
ย ย ย ย Plasma membrane
Plasmodesmata
Transmembrane
Plasmalemma
Water enters the root hair cells by:
Diffusion
Active transport
Osmosis
Facilitated diffusion
The tensile strength of the water column in xylem is crucial for upward water movement in plants. This strength is primarily a result of which intermolecular interaction?
Ionic bonding
Van der Waals forces
Hydrophobic interactions
Hydrogen bonding
The guttation phenomenon observed in some plants is primarily driven by:
High transpiration rates during the day.
Active transport of water into the xylem by xylem parenchyma.
Root pressure exceeding transpiration pull, particularly at night.
Capillary action in the xylem vessels.
Imagine a thin glass tube dipped in water. The water rises in the tube due to adhesion. In tall trees, a similar phenomenon helps maintain the water column, but a different property of water plays the major role in preventing the column from breaking under its own weight. What is this property?
Capillary action
High specific heat
Low viscosity
Cohesion
A plant with a higher concentration of solutes in its root cells compared to the surrounding soil will:
Absorb water more easily
Lose water to the soil
Not be affected
Become plasmolysed
Select the incorrect statement w.r.t. apoplast pathway of absorption of water in plants.
It consists of living parts of plant body
There is a little resistance in the movement of water
It is faster
It is not affected by metabolic state of root
ย ย ย ย Which pathway applies least resistance to the movement of water?
ย ย ย ย Apoplast pathway
ย ย ย ย Symplast pathway
ย ย ย ย Trans membrane pathway
ย ย ย ย Vacuolar pathway
ย ย ย ย Identify true and false statements and select the correct option from the codes given below
I.ย ย ย ย As suction pressure increases, water absorption also increases which in turn increases the absorption of ions
II.ย ย ย ย Absorption of ions is affected by transpiration pull
III.ย ย ย ย Large amount of charged particles are absorbed along with absorption of water
IV.ย ย ย ย Pressure flow hypothesis depends entirely on the existence of mechanism for loading sugars into phloem at the source region and unloading it at the sink
V.ย ย ย ย Contents in the sieve tube move undirectionally
I and III are true
II and IV are true
I, II and V are true
III, IV and V are true
ย ย ย ย Water occur freely in previous rocks and deep in soil above the impermeable strata is
ย ย ย ย Ground water
Soil water
Deep stratum water
Hygroscopic water