The primary mechanism for xylem sap ascent in tall trees is transpiration pull. However, root pressure plays a minor role. Which statement BEST describes the limited contribution of root pressure to overall xylem sap ascent in tall trees?
Root pressure generates excessive pressure that could damage the delicate xylem tissues in tall trees.
Root pressure is only active during the night and therefore cannot contribute to daytime transpiration.
Tall trees have a significantly lower root surface area to volume ratio, minimizing the contribution of root pressure.
Root pressure can only push water a limited height due to the opposing force of gravity and the relatively low pressure generated.
Related Questions
Root pressure
Is lowest at morning hours
Is responsible for guttation in grasses
Is highest in noon hours
Play a main role in water transport
The structure through which water is exuded during guttation is called:
Stomata
Lenticels
Hydathodes
Trichomes
Guttation place through
Lenticel
Hydathodes
Both 1 and 2
None of these
    Which one of the following is not related to guttation?
Hydathodes
Root pressure
High soil moisture
Lenticels
Identify the incorrect one for root pressure.
Positive hydrostatic pressure
Develop due to passive absorption of water
Responsible for guttation phenomenon
It provide a gentle push in the overall process of water transport
Which phenomenon demonstrates the existence of root pressure?
Transpiration
Wilting
Guttation
Photosynthesis
    Which one is true about guttation?
    It occurs through specialized pores called hydathodes
    It occurs in herbaceous plants when root pressure is low and transpiration is high
    It only occur during the day time
    It occurs in plants growing under conditions of low soil moisture and high humidity
Water lost in Guttation is
Pure water
liquid droplets
In vapour form
Either (A) or (B)
The process of guttation takes place?
Herbaceous stems
Leaf tips
Woody stems
All of these
    Choose the correct statements regarding guttation and pick the correct option from the codes given below
I.    It occurs through specialised pore called hydathode
II.    Hydathodes can be located on the margin and tips of leaves
III.    It occurs in plants growing under condition of low soil moisture and high humidity
IV.    It occurs in herbaceous plants when root pressure is low and transpiration is high
I and II
III and IV
I, II, III and IV
I, II and IV
